Pink, I'm so sorry he's continuing to bug you about meeting up. There are a couple of options that you need to think about:
1. If he continues to ask you to meet up with him, point out that the telephone is a very private way of having discussions about "personal" things, i.e., whereby the only two people that will know what the conversation is about will be on the phone.
2. You could meet up w/him, but he would have to give you some idea what the "personal" topic is about before hand. I certainly wouldn't want to walk in and not have at least some clue what will be discussed. Make sure you go some place public so that things don't get out of control. However, remember that others may be able to hear the conversation and quite frankly, that may not be "personal" enough for him. Try to keep your expectations at zero and try not to react to what he's saying. Come here to vent.
kml gave you some possibilities of what "personal" could be, but there is one that wasn't addressed. He could have a STD, i.e., the one that keeps on giving and he has to notify all of his partners. I certainly hope that's not the case, but the way he's handling this "personal" conversation has me thinking it's something he's done and it will impact you.
Of course, you could always ignore his requests and say that you are busy, but he can call, text or email whatever it is he needs to talk about (again).
You don't need to give him an answer today. Whatever it is, it could be something simple, but more pressing in his mind. If you do meet up with him, just remember that you can leave at any time. Do not allow his drama to suck you back in. You've been doing well, but if you opt not to see him, that's okay. It's your decision to make and I do understand how you feel.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.