I wouldn’t say fear has much to do with it, just how most are raised. Not that it’s a good thing that society is built like this mind you, just saying.

If a male friend starts touching me in a way that not even my own father did, I’m just midly uncomfortable. The last thing I’m thinking about is other peoples opinion on my sexuality. It’s more about just not being used to it.

Tbh, unless I’m sexually attracted to the person, I find contact uncomfortable regardless of the sex. Probably not exactly healthy behavior but anyways.