Please be careful. What you saw and heard sound like definite warning signs to me. And it doesn't sound like he is very remorseful either, but maybe I'm missing something. Maybe even if he was resourceful it would just be part of a cycle where he would be abusive to your child and/or to you, then feel bad for it and beg your forgiveness and promise never to do it again, but the cycle goes on and on, and it happens again and again. People stay in relationships like that because during "the honemoon periods" it seems worth it, and during the abuse, they feel helpless to get out.

Are there any other warning signs? Does he get jealous of your other relationships (even platonic ones), or want to know where you are and what you are doing more than is reasonable, or try to get you to act in such a way as to please him, although it's not who you really are? How would he react if you told him you wanted to break it off? If he overreacts to that, there's another warning sign.

Do you know any of his friends and family members very well? I wonder if any of them could tell you what he is really like in the long run. It's also possible that he doesn't show them the abusive side either though, so it's not a guarantee.

It ultimately comes down to you needing to make a choice based on your suspicions and feelings and what you know. Just be careful, ok? Being borderline seems to increase susceptibility to abusive relationships. We need to watch out for it.