Most Helpful Guy
I woulda fucking slapped his ass.
And GOD that woulda felt good.
Most Helpful Girl
You do not need to be with someone who will put their hands on you, guy OR girl. You deserve better. WHY he did it could be any number of reasons, but those reasons don't matter in light of the truth: his behavior is abusive and if he doesn't get help, there's no reason for him to stop at just grabbing you for a few seconds. The next thing you know, you could have broken bones or sprains... or worse. I say, cut all ties with him, and if he stalks you after or something, get a restraining order.