Is it normal for my man not to want sex? I need help!

I am happy to say that we do do all that kinda stuff. And the comedy night at the club is one of ours favorite spots as well :). Also, he doesn't mind to show his feminine side with me. I encourage it. As for looking at other woman, I tell him it is fine as long as it is just looking. But he has no interest in other woman at all. Which I would love but with him it worries me because if he doesn't want to look at other woman and he doesn't look at me either it makes me think that he might be gay. I highly doubt it but the thought is still in my head.
Communication between us is very well. We talk about everything. When it comes to this issue though he says he doesn't know why. Sex, deep kissing, touching ect. just doesn't interest him much.
I have fail to include that when he is in the mood, he is very intense and passionate.
Is it normal for a guy to only want it 3 times a week? Am I the one that is not normal for wanting it more and thinking it is a problem that he doesn't?