This man will never be your partner. You will forever be his mother, babysitter, victim of verbal abuse, the list goes on. I was married to one just like him, and we have children together. That's the worst, seeing that behavior in dealing with children.
You cannot save him. His actions are his, and you cannot babysit him through life. You will get tired of it, I promise. I think you should look at what life would be like with him once you are established, married, and have a family. Then decide if you should walk...or run....away from him.
I don't mean to be harsh. I think you should keep coming back as you need support during this period, and SR is a great place to find it.
Many hugs!