My head is all over the place😂

So I have a 14 month old little girl but am currently separated with her father. He kicked me and her out when she was just a few months old. I recently found a new guy who’s amazing with my daughter and everything is great but now I’m having doubts on if I should try one more time with her biological dad. He says he’s grown up and realized he was childish and made the biggest mistake ever. Idk what to do.. do I try or say no? Mind you, I also found out he had another girl which made me upset which I didn’t think it would. I can’t decide if I wanna try again cause I don’t want another women in my daughters life or if I genuinely want to see if it can work.