What can I do?

I had a FWB for 3 months. She ended up getting pregnant. I joked around with her saying we can have kids together but I was JUST JOKING AROUND. We spoke as to what would happen if she became pregnant and that was abortion, shes trying to trap me.

One day I get extremely drunk and we have sex a came in her, she asked me if I came and stupidly and drunkingly I said no. Well 1 month later she tells me she’s pregnant. I know it’s Mine. I already have 2 kids, I don’t want anymore! I don’t want anything to do with her or her baby. I told her when she found out that I didn’t want a baby with her. She choose to keep it. Fast forward to two weeks ago, I was served with child support papers! Is there anyway I can terminate my rights to her son? Can I opt out of child support. BEFORE YOU SAY I AM A TROLL, I’m not. I don’t feel i should pay for a child I didn’t want. She’s trying to trap me.