Question Me and ex baby daddy!

I dated this boy for 2yrs and it all started in high school my junior year till we graduated. Where both 22 now. After high school me and him even got a apartment. We both wanted a baby so we tired and got pregnant on my first month trying from me removing the implanon I was 5 weeks!! , but that ended in a MC. So we had broke up after that but we always stayed in touch till this day and he always pop up and out my life. I caught him cheating on me one day when we was 19 with a girl in his bed and he probably cheated before that too! We talk on and off but clearly we still have some love there , he ask me to give him a baby again today. He did hurt me that was my first love and he did do me wrong back then and it broke my heart. Now I think that he see that I was to good of a damn girlfriend. I want the baby but I'm nervous kinda cause of the past. What advice do you ladies have?