I'm really sorry this is going on. It's total b.s. Take as many days of space as you can get your hands on for YOU, not him. I don't know how many days it is going to take for you to mentally and gracefully deal with this GF thing alone before bothering to speak to him. It might take you WEEKS to get your self soothing fixed enough to deal with all that has been dumped on you in the past 48 hours. Also, I'm not saying he DOESN"T have a gf, if that's what he said. But I can also seem him exaggerating the seriousness and extent of it since he's admittedly dated that other time for VENGEANCE. Just get away from this toxic fool for a few weeks to see what you think and need to do. Don't let him bring you to his level and don't bother pointing out to him his part in it right now. Consider him checked out for a few weeks. Try to go to therapist. Sorry this is happening.