He lied to me

I’m in a messy situation. So I’ve been talking to this guy for a little over a year now. We’re not dating. He face timed me a few weeks ago and I noticed a scratch on his face. It was healed but you can tell it was a pretty deep scratch. I asked him what happened and he said it came from football practice. I said ok so I let it go. So fast forward to two days ago. He calls me upset and asks me if I can drive to his school to see him (mind you his university is 4 hours away from me). So my dumb a** drives all the way down there. He calls me when I’m 40 minutes away to tell me he has bad news. At that point I’m exhausted from the drive and I tell him to just hold on to it till I get there. When I get there we go to his room and he tells me he was talking to another girl and she was abusing him. The scratch he told me he got from football was really from her and there was more scratches I’ve never seen on his body. He also told me that they had drove to the neighboring state to hangout and she left him there but she eventually came back to pick him up. She’s texted him and threatened him multiple times to the point he had to report her. She also reported him and now he is possibly going to get suspended from his football team. And he slept with her.
I had been having strong feelings for months that he was talking to someone else already. And this isn’t the first girl that has gone crazy on him before.
I do blame myself for letting this relationship go for as long as it has. All the feelings I’ve ever had leading up to this point were all true. I’m actually embarrassed. I don’t know how to end it.