Why would you "reward" her temper tantrum? Sounds like keeping her in cake eating mode. Sorry for being blunt.
I think a stronger response might be more along the lines of your little smile and just walking away.
It was just somethng I wanted to do. It was a reward for me too.
EB,
Can YOU handle this? That's really the question. I don't think I could. If this woman has said she is not interested in being M'd to me, then why would I want her to have sex with me? I understand going without, believe me. And that is difficult.
But, if you are truly able to handle this without any of your emotions being stoked, then good.
Just be very careful. I agree with Hope that this IS cake eating on your W's part. It may also be a form of her exerting control over you. She gives you a little here and there to keep you in the game and interested in her.
Again, I'm not telling you NOT to do this, just make sure you aren't emotionally affected by it. And that, well, that would be tough to avoid.