need help with a guy who has a kid and one on the way :(

elle
 
It sounds crazy. We've had this on and off relationship. I met him when he had his first daughter and she was two. Never committed because he was worried what the baby mama would do if he had a new gf. I moved to la. Didn't talk for a while then we went to a festival together and reconnected. Once again we didn't talk for a bout 7 months to now find out his baby mama is pregnant AGAIN. He says it happened right before he and I went to the festival. He says he isn't in love with her and he knows he is an **** for saying the reason he sleeps with her time and time again is because she's all that's there. She's due next month and he wants to work it out with me. I agreed to a weekend away with him to talk and see each other but told him this will be a first and last. We had an amazing time together. It felt surreal to be together like that and he kept saying "I could really fall for you so hard" and I said "well I could have but not anymore" But when we were together he was so eager and wanting to know what could be done to be with me. We left it at me saying "see you again in 8 months" and him thinking we will see each other soon. I know I need to let this go I did this to myself, I'm just really sad and hurt that he let this happen again. He acts like he cares then pulls away, I guess my question is if anyone has been in this situation and how I cope with letting it go for good. How do I let it go :(