Cheating ex

My first boyfriend and I broke up in October because I found out that he had cheated on me since I wasn't having sex with him (I'm a virgin, 15. He's obviously not a virgin and 17 years old). The last thing I told him was that he better be careful because one day he was gonna end up getting a girl pregnant and becoming a father before he graduates... Today I heard through a mutual friend of ours that he got his side chick pregnant. I already feel bad for the child...