Love triangle PLEASE HELP

This is lengthy, but please read. Your responses are GREATLY appreciated. So I'm in a relationship with someone who I REALLY care about. He is crazy in love with me & accepts my daughter as if she was his. And he will do any & everything for me should I need him. BUT I can't help but to slip into these moments when I want the father of my child back. Idk what to do. The father of my child was really my first REAL relationship. & I loved him. We just had a lot of fights & arguments & a TON of break ups & make ups. My head is spinning. I can't help but think that life would be easier if we were together to take care of our child. Even tho I have someone that is willing to step up & play the role better than her biological father. PLEASE HELP ME.