I just want to cry

I am at a complete loss. I left my 6 month old daughter's father a little over 1 month ago and have found myself going back to him. He has been really nice most of the time and has just made me feel like I need to give us a shot.

I'm starting to see his manipulation, control, jealousy, and all of the things I left him for coming back. I feel like my heart is breaking all over again. I just wanted this to work. I'm in therapy and have been trying to work on myself to get the strength to get through this. I have bad credit right now so I don't know what my baby and I will do....

I feel like a terrible mother and I just dont know what to do. I never should have come back. I would have been ok by now...

How can I love and care about someone so much who is so bad for me?