wow bonaire.. you've really thought this sex thing through. lol

You are so right about the parent thing. They can influence you by telling you that sex is bad or a sin(like I was told and still being told today).

Anyway.. No I don't think you should fake it. Like mentioned above, get your hormones levels checked.. Oprah talked about this too.. lol.
Seriously though, if they aren't normal they can really mess with your sex drive.

And don't pretend you want to have sex if you don't. That's just rude to him and you're gonna make him think that you want to have sex as much as he does.. so you're kinda lying to him.. It'll complicate things because he won't be aware that don't want sex as much as he does. You need to address the problem, not pretend it's not there.

Good luck<3