My boyfriend of 6 years has new born child?

We are together for almost 6 years but two years ago we had a lot of problems and took a break for a few months. During this time he dated other woman for ashort period of time but soon we got back together and finded out that she is pregnant. He asked her to have abortion but She decided to have a child, they never talked again but after the baby was born she took my boyfriend to the court for child support. he asked for join custody and got rights to vist the child. He says he dosen't want the kid to hate him for not taking father responsibilities. I can't handle it, we were going to get married this summer, but i don't think i can live with it. Now i hate all babies, hate this woman for ruinig my dream of having family with him by giving him a first baby. I hate him that he was not carefull and he loves the child. I hate the kid and the mother. I fight inside if i should move on and find someone else fresh or stay. Should I alow her decison to ruin my life withhim and deep love we have for each other?