This is exactly why I choose not to be in relationships. I hate light touch! Like being petted or scratched. Ugh.
It literally makes me angry. And nauseous.
Now, hugs are different because I like the feeling of pressure. As long as they don't last longer than 5 seconds. I don't ever want to be trapped.

I think for me the problem is soft, gentle touch (and that's what partners want to do). I love giving people hi-fives because I get to feel the slap on my hand.