"...my first impulse is to flatly say no, but it's possible that I'm missing something.  Is it, for example, an inevitable and understood part of these relationships that you get tired of me every two weeks but this is a problem which can be totally and cheerfully solved by chaining you up and carrying out some procedure on you?  If so, I'm not sure I could go along with it, unless there's some corresponding - expectation, potential, clear inner state of your mind - that can be shown by some spell akin to Detect Desires.  Maybe not even then, but it wouldn't be a flat no, that way."

"...my first impulse is to say no, but it's possible that I'm missing something.  Is it, for example, an inevitable and understood part of these relationships that you get tired of me every two weeks but this is a problem which can be totally and cheerfully solved by chaining you up and carrying out some procedure on you?  If so, I'm not sure I could go along with it, unless there's some corresponding - expectation, potential, clear inner state of your mind - that can be shown by some spell akin to Detect Desires.  Maybe not even then, but it wouldn't be a flat no, that way."