Well said.

In these kind of situations, what I find completely unacceptable - not to mention selfish and tyrannical - is when the non-sexual partner still demands fidelity. :-o

I mean, you are done with sex and you're fine without it... it sucks, but it might happen. Ok. But then, why do you care what do I do with my body with somebody else...?!?

It sounds like a spoiled child, who gets bored with a toys, but he still forbids his brother to play with it: "That's MINE, so even if I don't want it anymore, nobody's allowed to touch it!".