My boyfriend cheated on me then KNOCKED HER UP!:(?

Hi. I was cleaning my boyfriends car out while he was cleaning our garage. I found a receipt for a pregnancy test and a phone number on the back. I thought seomthing was fishy and so i called the number. A girl answered. I asked if she new my boyfriend of 1 year, and she said yes that she had been dating him for 9 months. I told him and she was like oh yeah he mentioned something sabout having anothr girlfriend but his is big and cute so i wanted him forf myseld. I consulted him about it and he said oh yeahm you were both hot but she had better then you offered. I started to cry and then he came over and unzipped my pants. I ran away to get my clothes and my gear and then he chased me up the stairs and said, Im sorry baby, but I want to have it with you to make up for you. I want to have 2 children, please forgive me. I said wat do u mean 2 children and he said, oh my other girlfriend had her baby last week, she had it premmy. It was a girl but i named it after you.i had met her at a bar and i was drunk and we had . I knocked her up but i didnt want to leave the baby all alone so i dated 2 people. Im really sorry. I cried even more and then drove away. I cry at home all the time now, and im afraid that it will happen again. What should I do and was everything he said true? Why was it me? Arghh so many questions. I no that this guy was a head (this happened 2 months ago btw). I have a new boyfriend who seems really nice. He takes everything slowly and is my type deffinately but i feel scared for life. Now i dont want to do it with him if he asks because im apparently really abd at it. If he asks me if we want to have what should i tell him?? Please help me- other stories are welcome to! thnkyou :(