hmm sounds like he was being kind of a jerk, but maybe he was just really tired...I don't know I couldn't do a long distance relationship because I wouldn't know how to resolve issues like that or make sense of it. It is weird though if he's usually caring and/or tries to help and was just all the sudden acting all distant, but hard to say what the reasons for that could be.

I mean it could be a panic attack, could just be it really upset you and its nothing to do with any mental problem...or perhaps issues you have make it harder to cope with, but in my opinion seems like he was also being a jerk so don't think its unusual it upset you.