Should I leave him ?

Here are the messages I sent him one night where I felt like giving up. He sees me cry almost every day because of him. We currently have a one month baby

He came to my house 5 mins after sending these messages, saying he wants to change. And he confessed that part of the reason he's so mean towards me is because he's jealous about me. He says he thinks about other men looking at my body and thinking things of me, or he thinks about the guy I lost my virginity to and it makes him mad. He said just by hearing my voice annoys him, and that when he looks at my he feels like screaming at me for my past. I only had two relationships before him and have only done it with one guy before him. He told me he feels bad because he knows hes a bad boyfriend towards me, but he doesn't know how to control it. Should I stick around and hope he gets better ? Or just leave him. It's truly hard.