I would not give anyone a second "try" who hurt anyone I love or even merely "knew." I would be especially adamant if they hurt my child when I was not in the room to see what happened. There's nothing whatsoever that says it won't happen again and again, when you're not "there" and there's lots to say the person will make sure if it does that you are not even within earshot. If you had not heard the abuse and seen the bruises because you were worried then you wouldn't have known! You shouldn't need physical evidence to know a person does not have anyone's best interest at heart, especially a helpless child's. There's no way you can guarantee this won't happen again and being a gambling woman, I'm betting it will if you keep seeing this man. Words don't cut it in relationships, "actions" do and this man has struck out! I watched my husband's relationship with his ex-wife, his mother, my mother and myself for 5 years before I decided he was the right person for me. He didn't make a single mistake or worry me once :-)