Am I in the wrong ?

So I'm in my first year of uni, and I've got this friend who I met through mutual friends and we sorta started chatting a bit and became good friends and we would like have proper intimate and honest conversations about things going on in our lives. But we had this way of rubbing each other up the wrong way, I find him really difficult at times and mutual friends have said that he can be really difficult. So like we've fallen out quite a few times like I meet a girl in a club recently and went back to hers and he said he couldn't be friends with someone like that, and another time I said I smoked a bit last week and he said he couldn't be best friends with someone like that, and he says we can only be best friends or nothing for some stupid reason. I did sort of go along with it and say that yes we were best friends then. But basically he didn't do very well in exams so is a bit depressed and asked me to come to his home next week for a few days to be with him for his birthday and I said no. He has now removed me from fb etc and said he never wants to hear/see me ever again, and that he's gunna be alone on his birthday, I've hurt him again etc. Am I in the wrong, is this actually a really bad thing for me to do, I just thought that I hadn't seen him for a while, like he'd ignored everyone for the last week or so, and we didn't always get on that well he's quite different to me in a lot of ways but we do have a good connection, I just thought I didn't want to do it, and I was looking forward to my week off next week as I am doing exams atm and get a week off (to sleep and party :))

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