No baby daddy

So me and my boyfriend have not been fighting. We actually been really good so excited about having a baby. So last week he tells me I don't want to hurt you and I don't want to cheat on you I met this girl in the train I got her number and called her once. It is best if we break up. He said he wants to break up because he feels all the sexual emotion coming up and he wants to have sex with others. He said he feel like he's never experienced nothing and would like to. He said he want to see what going to happen with him and the other girl. I said I am never going to call you again and fuck off. He laughed and said you would. Then tells me I'm going to take care of you and the baby. I don't know to be mad sad or punch him in the face. When people are telling me I'm only 4 months pregnant I can get abortion what does my baby have to do with this assholes. Feeling so frustrated