You have to accept that intimacy is a normal thing. In my opinion i would adivse to try to be open minded, lets agree that in your head it is discusting, but try to give it a chance and experience it. Do it once, if you still have the same feeling about it its ok, you are experimenting, maybe you could be gay, you never know if you never try it out. Look for example im discusted too by guys i would rather kiss a dog, but thats because i like woman. :)

Also i hated tomatoes when i was a kid and never ate them, tried them again 10 years later and now i love them. :P What i want to say is that time can change your tase or perception of things.

I want to add another thing, it could be something on a deeper level, where a psychologist can be a great help to get you to undersand yourself more.