Along the Standard Romance Lattice, on the most common pathway where first you have sex and then become friends, the steps would be numbered as follows:

0 - Assumed prior knowledge, commonly known mutual possession of the human heritage and frameworks laid down by Civilization.
1 - Mutual determination of probable receptivity to flirting.
2 - Flirting while maintaining plausible deniability.
3.0 - Common knowledge of mutual attraction achieved.
3 - Teasing or being nice to each other without physical contact; maneuvering for later relationship advantage.
4 - Physical contact.
5 - Overtly sexual contact.
6 - Sex with genital participation.
7 - Maneuvering around whether or not to go on a second date.
8.0 - Common knowledge established of a relationship extending beyond a single encounter.
8 - Dating, learning more about each other.
9 - Taking on obligations and commitments inside the relationship; revealing of nontrivial private info to each other with attached secrecy obligations; less-than-maximal-ogamy arrangements for those into such things.
10 - Having a child; medium-term marriage.
11 - Long-term to indefinite marriage.
12 - Intention to be together in the Future for eternity.

Technically according to this scale, Keltham and Carissa have yet to achieve Step 0!  Actually, that's not just a technicality!  That part is, in fact, quite important!  But the most correct answer to the intent of Carissa's question... would be that the Standard Romance Lattice doesn't consider the current depth of perversion as a detail that matters to assessing the rest of the scale.  If adapted to include sadomasochism in the obvious way, it'd parse up stimulation by pain into an equivalence class of other acts that produced around the same amount of arousal in the target.  If Keltham knew how much of a sexual act biting Carissa Sevar's ear actually is to her, which he doesn't, he'd probably put them at around 5.7 on the standard scale.

Along the Standard Romance Lattice, on the most common pathway where first you have sex and then become friends, the steps would be numbered as follows:

0 - Assumed prior knowledge, commonly known mutual possession of the human heritage and frameworks laid down by Civilization.
1 - Mutual determination of probable receptivity to flirting.
2 - Flirting while maintaining plausible deniability.
3.0 - Common knowledge of mutual attraction achieved.
3 - Teasing or being nice to each other without physical contact; maneuvering for later relationship advantage.
4 - Physical contact.
5 - Overtly sexual contact.
6 - Sex with genital participation.
7 - Maneuvering around whether or not to go on a second date.
8.0 - Common knowledge established of a relationship extending beyond a single encounter.
8 - Dating, learning more about each other.
9 - Taking on obligations and commitments inside the relationship; revealing of nontrivial private info to each other with attached secrecy obligations; less-than-maximal-ogamy arrangements for those into such things.
10 - Having a child; medium-term marriage.
11 - Long-term to indefinite marriage.
12 - Intention to be together in the Future for eternity.

Technically according to this scale, Keltham and Carissa have yet to achieve Step 0!  Actually, that's not just a technicality!  That part is, in fact, quite important!  But the most correct answer to the intent of Carissa's question... would be that the Standard Romance Lattice doesn't consider the current depth of perversion as a detail that matters to assessing the rest of the scale.  If adapted to include sadomasochism in the obvious way, it'd parse up stimulation by pain into an equivalence class of other acts that produced around the same amount of arousal in the target.  If Keltham knew how much of a sexual act biting Carissa Sevar's ear actually is to her, which he doesn't, he'd probably put that at around 5.7 on the standard scale.

Along the Standard Romance Lattice, on the most common pathway where first you have sex and then become friends, the steps would be numbered as follows:

0 - Assumed prior knowledge: commonly known mutual possession of the human heritage and frameworks laid down by Civilization.
1 - Mutual determination of probable receptivity to flirting.
2 - Flirting while maintaining plausible deniability.
3.0 - Common knowledge of mutual attraction achieved.
3 - Teasing or being nice to each other without physical contact; maneuvering for later relationship advantage.
4 - Physical contact.
5 - Overtly sexual contact.
6 - Sex with genital participation.
7 - Maneuvering around whether or not to go on a second date.
8.0 - Common knowledge established of a relationship extending beyond a single encounter.
8 - Dating, learning more about each other.
9 - Taking on obligations and commitments inside the relationship; revealing of nontrivial private info to each other with attached secrecy obligations; less-than-maximal-ogamy arrangements for those into such things.
10 - Having a child; medium-term marriage.
11 - Long-term to indefinite marriage.
12 - Intention to be together in the Future for eternity.

Technically according to this scale, Keltham and Carissa have yet to achieve Step 0!  Actually, that's not just a technicality!  That part is, in fact, quite important!  But the most correct answer to the intent of Carissa's question... would be that the Standard Romance Lattice doesn't consider the current depth of perversion as a detail that matters to assessing the rest of the scale.  If adapted to include sadomasochism in the obvious way, it'd parse up stimulation by pain into an equivalence class of other acts that produced around the same amount of arousal in the target.  If Keltham knew how much of a sexual act biting Carissa Sevar's ear actually is to her, which he doesn't, he'd probably put that at around 5.7 on the standard scale.

Along the Standard Romance Lattice, on the most common pathway where first you have sex and then become friends, the steps would be numbered as follows:

0 - Assumed prior knowledge: commonly known mutual possession of the human heritage and frameworks laid down by Civilization.
1 - Mutual determination of probable receptivity to flirting.
2 - Flirting while maintaining plausible deniability.
3.0 - Overt common knowledge of mutual attraction achieved.
3 - Teasing or being nice to each other without physical contact; maneuvering for later relationship advantage.
4 - Physical contact.
5 - Overtly sexual contact.
6 - Sex with genital participation.
7 - Maneuvering around whether or not to go on a second date.
8.0 - Common knowledge established of a relationship extending beyond a single encounter.
8 - Dating, learning more about each other.
9 - Taking on obligations and commitments inside the relationship; revealing of nontrivial private info to each other with attached secrecy obligations; less-than-maximal-ogamy arrangements for those into such things.
10 - Having a child; medium-term marriage.
11 - Long-term to indefinite marriage.
12 - Intention to be together in the Future for eternity.

Technically according to this scale, Keltham and Carissa have yet to achieve Step 0!  Actually, that's not just a technicality!  That part is, in fact, quite important!  But the most correct answer to the intent of Carissa's question... would be that the Standard Romance Lattice doesn't consider the current depth of perversion as a detail that matters to assessing the rest of the scale.  If adapted to include sadomasochism in the obvious way, it'd parse up stimulation by pain into an equivalence class of other acts that produced around the same amount of arousal in the target.  If Keltham knew how much of a sexual act biting Carissa Sevar's ear actually is to her, which he doesn't, he'd probably put that at around 5.7 on the standard scale.

Along the Standard Romance Lattice, on the most common pathway where first you have sex and then become friends, the steps would be numbered as follows:

0 - Assumed prior knowledge: commonly known mutual possession of the human heritage and frameworks laid down by Civilization.
1 - Mutual determination of probable receptivity to flirting via passive or non-flirtatious information-gathering.
2 - Flirting while maintaining plausible deniability.
3.0 - Overt common knowledge of mutual attraction achieved.
3 - Teasing or being nice to each other without physical contact; maneuvering for later relationship advantage.
4 - Physical contact.
5 - Overtly sexual contact.
6 - Sex with genital participation.
7 - Maneuvering around whether or not to go on a second date.
8.0 - Common knowledge established of a relationship extending beyond a single encounter.
8 - Dating, learning more about each other.
9 - Taking on obligations and commitments inside the relationship; revealing of nontrivial private info to each other with attached secrecy obligations; less-than-maximal-ogamy arrangements for those into such things.
10 - Having a child; medium-term marriage.
11 - Long-term to indefinite marriage.
12 - Intention to be together in the Future for eternity.

Technically according to this scale, Keltham and Carissa have yet to achieve Step 0!  Actually, that's not just a technicality!  That part is, in fact, quite important!  But the most correct answer to the intent of Carissa's question... would be that the Standard Romance Lattice doesn't consider the current depth of perversion as a detail that matters to assessing the rest of the scale.  If adapted to include sadomasochism in the obvious way, it'd parse up stimulation by pain into an equivalence class of other acts that produced around the same amount of arousal in the target.  If Keltham knew how much of a sexual act biting Carissa Sevar's ear actually is to her, which he doesn't, he'd probably put that at around 5.7 on the standard scale.

Along the Standard Romance Lattice, on the most common pathway where first you have sex and then become friends, the steps would be numbered as follows:

0 - Assumed prior knowledge: commonly known mutual possession of the human heritage and frameworks laid down by Civilization.
1 - Mutual determination of probable receptivity to flirting via passive or non-flirtatious information-gathering.
2 - Active flirting while maintaining plausible deniability.
3.0 - Overt common knowledge of mutual attraction achieved.
3 - Teasing or being nice to each other without physical contact; maneuvering for later relationship advantage.
4 - Physical contact.
5 - Overtly sexual contact.
6 - Sex with genital participation.
7 - Maneuvering around whether or not to go on a second date.
8.0 - Common knowledge established of a relationship extending beyond a single encounter.
8 - Dating, learning more about each other.
9 - Taking on obligations and commitments inside the relationship; revealing of nontrivial private info to each other with attached secrecy obligations; less-than-maximal-ogamy arrangements for those into such things.
10 - Having a child; medium-term marriage.
11 - Long-term to indefinite marriage.
12 - Intention to be together in the Future for eternity.

Technically according to this scale, Keltham and Carissa have yet to achieve Step 0!  Actually, that's not just a technicality!  That part is, in fact, quite important!  But the most correct answer to the intent of Carissa's question... would be that the Standard Romance Lattice doesn't consider the current depth of perversion as a detail that matters to assessing the rest of the scale.  If adapted to include sadomasochism in the obvious way, it'd parse up stimulation by pain into an equivalence class of other acts that produced around the same amount of arousal in the target.  If Keltham knew how much of a sexual act biting Carissa Sevar's ear actually is to her, which he doesn't, he'd probably put that at around 5.7 on the standard scale.

Along the Standard Romance Lattice, on the most common pathway where first you have sex and then become friends, the steps would be numbered as follows:

0 - Assumed prior knowledge: commonly known mutual possession of the human heritage and frameworks laid down by Civilization.
1 - Mutual determination of probable receptivity to flirting, via passive or non-flirtatious information-gathering.
2 - Active flirting while maintaining plausible deniability.
3.0 - Overt common knowledge of mutual attraction achieved.
3 - Teasing or being nice to each other without physical contact; maneuvering for later relationship advantage.
4 - Physical contact.
5 - Overtly sexual contact.
6 - Sex with genital participation.
7 - Maneuvering around whether or not to go on a second date.
8.0 - Common knowledge established of a relationship extending beyond a single encounter.
8 - Dating, learning more about each other.
9 - Taking on obligations and commitments inside the relationship; revealing of nontrivial private info to each other with attached secrecy obligations; less-than-maximal-ogamy arrangements for those into such things.
10 - Having a child; medium-term marriage.
11 - Long-term to indefinite marriage.
12 - Intention to be together in the Future for eternity.

Technically according to this scale, Keltham and Carissa have yet to achieve Step 0!  Actually, that's not just a technicality!  That part is, in fact, quite important!  But the most correct answer to the intent of Carissa's question... would be that the Standard Romance Lattice doesn't consider the current depth of perversion as a detail that matters to assessing the rest of the scale.  If adapted to include sadomasochism in the obvious way, it'd parse up stimulation by pain into an equivalence class of other acts that produced around the same amount of arousal in the target.  If Keltham knew how much of a sexual act biting Carissa Sevar's ear actually is to her, which he doesn't, he'd probably put that at around 5.7 on the standard scale.

Along the Standard Romance Lattice, on the most common pathway where first you have sex and then become friends, the steps would be numbered as follows:

0 - Assumed prior knowledge: commonly known mutual possession of the human heritage and frameworks laid down by Civilization.
1 - Mutual determination of probable receptivity to flirting, via passive or non-flirtatious information-gathering.
2 - Active flirting while maintaining plausible deniability.
3.0 - Overt common knowledge of mutual attraction achieved.
3 - Teasing or being nice to each other without physical contact; maneuvering for later relationship advantage.
4 - Physical contact.
5 - Overtly sexual contact.
6 - Sex with genital participation.
7 - Maneuvering around whether or not to go on a second date.
8.0 - Common knowledge established of a relationship extending beyond a single encounter.
8 - Dating, learning more about each other.
9 - Taking on obligations and commitments inside the relationship; revealing of nontrivial private info to each other with attached secrecy obligations; less-than-maximal-ogamy arrangements for those into such things.
10 - Having a child; or childless marriage lasting at least 15 years.
11 - Long-term to indefinite marriage; multiple children.
12 - Intention to be together in the Future for eternity.

Technically according to this scale, Keltham and Carissa have yet to achieve Step 0!  Actually, that's not just a technicality!  That part is, in fact, quite important!  But the most correct answer to the intent of Carissa's question... would be that the Standard Romance Lattice doesn't consider the current depth of perversion as a detail that matters to assessing the rest of the scale.  If adapted to include sadomasochism in the obvious way, it'd parse up stimulation by pain into an equivalence class of other acts that produced around the same amount of arousal in the target.  If Keltham knew how much of a sexual act biting Carissa Sevar's ear actually is to her, which he doesn't, he'd probably put that at around 5.7 on the standard scale.

Along the Standard Romance Lattice, on the most common pathway where first you have sex and then become friends, the steps would be numbered as follows:

0 - Assumed prior knowledge: commonly known mutual possession of the human heritage and frameworks laid down by Civilization.
1 - Mutual determination of probable receptivity to flirting, via passive or non-flirtatious information-gathering.
2 - Active flirting while maintaining plausible deniability.
3.0 - Overt common knowledge of mutual attraction achieved.
3 - Teasing or being nice to each other without physical contact; maneuvering for later relationship advantage.
4 - Physical contact.
5 - Overtly sexual contact.
6 - Sex with genital participation.
7 - Maneuvering around whether or not to go on a second date.
8.0 - Common knowledge established of a relationship extending beyond a single encounter.
8 - Dating, learning more about each other.
9 - Taking on obligations and commitments inside the relationship; revealing of nontrivial private info to each other with attached secrecy obligations; less-than-maximal-ogamy arrangements for those into such things.
10 - Having a child; or childless marriage lasting at least 15 years.
11 - Long-term to indefinite marriage; multiple children if so desired.
12 - Intention to be together in the Future for eternity.

Technically according to this scale, Keltham and Carissa have yet to achieve Step 0!  Actually, that's not just a technicality!  That part is, in fact, quite important!  But the most correct answer to the intent of Carissa's question... would be that the Standard Romance Lattice doesn't consider the current depth of perversion as a detail that matters to assessing the rest of the scale.  If adapted to include sadomasochism in the obvious way, it'd parse up stimulation by pain into an equivalence class of other acts that produced around the same amount of arousal in the target.  If Keltham knew how much of a sexual act biting Carissa Sevar's ear actually is to her, which he doesn't, he'd probably put that at around 5.7 on the standard scale.

Along the Standard Romance Lattice, on the most common pathway where first you have sex and then become friends, the steps would be numbered as follows:

0 - Assumed prior knowledge: commonly known mutual possession of the human heritage, and of default frameworks laid down by Civilization.
1 - Mutual determination of probable receptivity to flirting, via passive or non-flirtatious information-gathering.
2 - Active flirting while maintaining plausible deniability.
3.0 - Overt common knowledge of mutual attraction achieved.
3 - Teasing or being nice to each other without physical contact; maneuvering for later relationship advantage.
4 - Physical contact.
5 - Overtly sexual contact.
6 - Sex with genital participation.
7 - Maneuvering around whether or not to go on a second date.
8.0 - Common knowledge established of a relationship extending beyond a single encounter.
8 - Dating, learning more about each other.
9 - Taking on obligations and commitments inside the relationship; revealing of nontrivial private info to each other with attached secrecy obligations; less-than-maximal-ogamy arrangements for those into such things.
10 - Having a child; or childless marriage lasting at least 15 years.
11 - Long-term to indefinite marriage; multiple children if so desired.
12 - Intention to be together in the Future for eternity.

Technically according to this scale, Keltham and Carissa have yet to achieve Step 0!  Actually, that's not just a technicality!  That part is, in fact, quite important!  But the most correct answer to the intent of Carissa's question... would be that the Standard Romance Lattice doesn't consider the current depth of perversion as a detail that matters to assessing the rest of the scale.  If adapted to include sadomasochism in the obvious way, it'd parse up stimulation by pain into an equivalence class of other acts that produced around the same amount of arousal in the target.  If Keltham knew how much of a sexual act biting Carissa Sevar's ear actually is to her, which he doesn't, he'd probably put that at around 5.7 on the standard scale.

Along the Standard Romance Lattice, on the most common pathway where first you have sex and then become friends, the steps would be numbered as follows:

0 - Assumed prior knowledge: commonly known mutual possession of the human heritage, and of default frameworks laid down by Civilization.
1 - Mutual determination of probable receptivity to flirting, via passive or non-flirtatious information-gathering.
2 - Active flirting while maintaining plausible deniability.
3.0 - Overt common knowledge of mutual attraction achieved.
3 - Teasing or being nice to each other without physical contact; maneuvering for later relationship advantage.
4 - Physical contact.
5 - Overtly sexual contact.
6 - Sex with genital participation.
7 - Maneuvering around whether or not to go on a second date.
8.0 - Common knowledge established of a relationship extending beyond a single encounter.
8 - Dating, learning more about each other.
9 - Taking on obligations and commitments inside the relationship; revealing of nontrivial private info to each other with attached secrecy obligations; less-than-maximal-ogamy arrangements for those into such things.
10 - Having a child; or childless marriage lasting at least 15 years.
11 - Long-term to indefinite marriage; multiple children if so desired.
12 - Intention to be together in the Future for eternity.

Technically according to this scale, Keltham and Carissa have yet to achieve Step 0!  Actually, that's not just a technicality!  That part is, in fact, quite important!  But the most correct answer to the intent of Carissa's question... would be that the Standard Romance Lattice doesn't consider the current depth of perversion* as a detail that matters to assessing the rest of the scale.  If adapted to include sadomasochism in the obvious way, it'd parse up stimulation by pain into an equivalence class of other acts that produced around the same amount of arousal in the target.  If Keltham knew how much of a sexual act biting Carissa Sevar's ear actually is to her, which he doesn't, he'd probably put that at around 5.7 on the standard scale.

(*)  Lit. 'sexual overcomplication'.