If your mind is not comfortable with it, you will not be able to 'work around' it either. It maybe the occassional play time you can enjoy but as for it being a lifestyle if you are not comfortable now you never will be. It doesn't grow on you. A man who is interested in cross dressing and anal sex is not necessarily gay at all, but there is a factor in their makeup that they are more comfortable when they are in close touch with their femine side. Something btw that all men do pocess. It is just most men do not reach into their femine side in the bedroom. Those that do, want a mate who is all into them being the femine part of the activity. You are playing parts and he is in the part that he is most comfortable with. For whatever reason he is not as comfortable being the alpha male.
Not to sound completely textbook 101 but it does have to do with his mother and his relationship (or lack of one). In a nutshell it is a psychological thing not a fetish....and he isn't likely going to grow out of it. A fetish is a psychosexual attraction to inanimate things, that isn't what is going on here. His comfort zone is what it is about. The biggest problem is that it isn't your comfort zone. In fact it is making you uncomfortable. Which in time you will come to completely resent, if you don't already.
Sex is supposed to be about two people, not one. The internet opens a door that until it's advent was not available to people with these kinds of desires. Now the click of a keyboard can open doors to entire cultures and markets that cater to the exact tendancies he has. He will not give that up easily if ever, he will simply hide it from you better.
Understand that cross dressing isn't wrong. Sexual excitement comes to people in many different ways. He is a consenting adult that likes it. You aren't going to change him no matter how much you beg and plead and threaten. That feminine need is very strong and he is being honest with you when he tells you he 'needs' it. Cross dressers take a huge risk exposing their secret desires to someone, the ridicule and reprisals are huge and can be devastating. He is being very straightforward with you. The only question here really is if you can AND want to adhere to his methods. This isn't going away.....and it isn't about him loving you either. He may love you with all he is, this is just who he is.
Regards,
~Ami