How should I deal with baby daddy drama?

[heather]

I have a baby with this guy who were actually really good friends. He wants to take a DNA test to see if this child is his.Which I'm fine with doing. He's in a new relationship which is none of my business and I want him to be happy! Since this new relationship he has avoided his duty as a father, and has actually bailed 5 times on the DNA test. He also bailed on his child first birthday to go to the beach with his girlfriend. I'm starting to grow mad and even resenting the GF , She's always saying stupid stuff to me and I keep quit because she's young and really it's none of her business. He went away this weekend to clear his head and think what he needs to do. Which really makes me mad. I'm the one that is dealing with this rejection and I'm the one that runs around on his bec and call. How do I stop this? Oh and Last week I did stand up to him and told him I was done and he came to a bar that I was at with friends and looked me right in the eyes and told me he wanted me and our child in his life ( me as a friend) How do I stop making me fall for this each time? I just want to walk away how do I do this?