What the hell is my boyfriend playin at?

He invited me and my 7yr son over for boxing with him, his mum and his daughter, we went over to some friends for dinner, we had a lovely time, then he wanted me to drive to see his friends, I did and he ended up gettin so drunk that he was very demanding to me and his friends. We were all embarrest, He dropped his trousers and waggled it about in front of everyone, pulling me about sayin your not gonna leave me are you? My mum gettin old and I’ll need you, I then told him that we have to get back to the children, so we got in the car, he turned the music up so loud then proceeded to scream along to the lyrics, I just wanted to get out and walk. We got back to the kids, he wanted to drive home but I didn’t let him. He upset my son in the way he was talking to me. The next morning I told him how much of a prick he’d been and left crying, I haven’t heard from him since I just don’t know where to go from here? Please my self esteem is low and need some advice x