DEAR ABBY: I just started dating an amazing guy. He is sweet, funny and handsome, but I don’t feel as strongly for him as he does for me. Maybe it’s too early in the relationship for me to be worried about feelings, or maybe as much as I want to have deep feelings for him, I don’t. Lately, I have been tempted to cheat. That sounds awful, I know, but for some reason, I feel it’s my last chance befo…