All you gotta do is ask. "Can I hug you." No? Move on. Why the fuck would you want to hug or kiss someone that isn't into it? What the fuck kind of lame ass are you? Can you not find people willing to hug you? That's a YOU problem. Not a THEM problem.
and by the way NO is a complete sentence. Nobody owes you a fucking explanation as to why they don't want to do anything let alone anything personal. People shouldn't have to pull out a gun and shoot you for you to take NO for a fucking answer.