First, hugs to you. My concern is that he's using sex as a manipulation tool. Men do not NEED sex... they WANT it. It's not like he is going to spontaneously combust if he goes without it for a while.

Maybe you should really examine your relationship... maybe even challenge him by asking what he likes about the relationship MINUS the sex. It is my hope that you guys have more to go on than that if you are looking for something long term.

If your relationship happens to be defined by sex and you both agree that works, more power to you. Don't feel guilty about not wanting to do the naked web cam thing either. We all have different comfort levels with things like that, and if he can't understand that, maybe you should suggest porn or even watch it together.

I dunno.... the relationship just seems one sided from your post.