Aww...thanks for all the lovely messages, they really cheered me up 
It was really tough, I just couldn't stay calm even though I tried! I actually started pretty well. First, I have to say that he seemed really surprised so I don't think he was expecting it!
So, I started out super calm, just told him that I wanted to break things off because I didn't think our relationship was going where I wanted bla bla bla. So he asked what this was about, basically why I felt that way. So, again, I stayed cool and explained how I think I want more from it than he does etc. He processed it for a few mins and then agreed with me!!! He gave me all this crap about how if I feel that way, it's probably the right thing and so on. He was all calm and diplomatic about it and that just pissed me off so much!!
Mainly because, at the back of my mind, all the hurt was there and he had no idea. I felt like I was just giving him a free pass and he was able to just walk away from it with no drama, which is probably what he wanted anyway. I guess I was expecting too much, but seriously a little emotion, anger, confusion...ANYTHING...would have been welcome. So I started pushing him basically. I brought up specific things that hurt me or made me angry, and he just stayed calm and kept saying how he was sorry, this is the right thing to do, ugh.
So then, finally, I blurted out how he is now free to spend all the time he wants with OW. Well, he wasn't so calm anymore..he said that he doesn't know what I've heard, but that nothing happened between them. So I went on this whole rant about how he may not be having sex with her, but it's clear that he's emotionally involved and that it is cheating etc. He kept denying it, telling me that I had no idea what was going on and so on and on. It was horrible because I got really upset, but he was totally squirming too and it was worth it just for that.
So all this time I was basically in tears and just had to get out because there were people around us and it was getting embarrassing. Then he started saying how he couldn't just leave me alone so upset. I told him to go fuck himself haha...but he kept insisting on driving me to my friend's place and finally agreed. So he dropped me off at her place and that was it.
Ugh and apparently I was a nightmare the other night too with my friends. I gave my phone up before we went out, but after a few drinks I kept trying to get it back to call him. Then, I even walked out of the bar because I wanted to go to see him. I'm so lucky I had such good friends around me that stopped me from acting like even more of an idiot. And luckily, I don't remember too much of it!
Anyway, all in all, horrible night and totally hungover now....but at least it's over and I woke up to so many lovely messages on here and a really nice breakfast from my friend 