I feel like as if I messed up my whole life?

Girl this guy has the creep factor going for him and that's about it. You didn't ruin your life but next time don't be having guys over when your parents are gone. Seriously, what did you expect? Do yourself a favor and give that boy a wide birth and stay far from him, no exceptions no matter what's going on with your friends. This boy doesn't understand NO and he doesn't like boundaries. He is the type that will so stay away from him.