My boyfriend and I have been dating for 8 months and he told me that his ex called saying she's pregnant and they've been dating before I dated him. Later I asked how many months is this girl and he said with confidence 4 months, and I was like shocked because we dated for 8 months. So that means he cheated on me and I was quiet when I asked him why. He said he was sorry, it was a mistake.
I don't know what to do. My friends say I must move on. I don't deserve this I am in grade 9 and he doesn't go 2 school but still he still chats and call the girl. He says it wasn't his girlfriend, but he was lying.