He is not the kind of person you want to have even just as a friend at this point because he was very disrespectful by ending the relationship the way he did. In short, he's not a very nice person, and I would cut all ties and not see him again in any capacity. And NO, he doesn't deserve an apology. He hurt you beyond words, and whatever you said to him... well, you needed it, as you'd kept it inside all that time. You're giving him more than he deserves if you offer an apology. After all, you've done NOTHING wrong.