Resolution.. kind of?

Just an update on my earlier post about my ex, and our infuriating conversation from earlier.
He called and we talked on the phone for a long time. By the time I actually spoke to him, I had calmed down thankfully, I don't like losing my cool.
He apologized for fighting with me. He said that when it comes to fighting - at a certain point its not about the point anymore, it becomes just about winning. So, he apologized for that too.
I told him that we can go over it all again and again, and rehash old fights, but there really isn't a point to it. What's done is done. Although we ended the conversation on a good note, I am still unsure at this point if we will really remain friends. We both said that we would like that, but I don't know if he can handle that at this point. I think I had detached myself from the situation far enough back that I don't think it will be an issue for me to see him and not get completely reminiscent about how good things were. I remember very quickly and vividly why we are not together. And I told him so this evening. I don't know if that was mean or not, but I felt it needed to be said. I think this chapter of my life is over with him and we both need to move on, we've already put too much time and effort into it. He does seem to be having a harder time coping with this than I have. Which is hard, but I don't feel remorseful about, as cold and calloused as it sounds, I just don't. I really feel I gave it everything I had, and even more than I had at times. It just got so exhausting and felt like the only option at a certain point. He asked me if I was also experiencing some of the difficulty getting through this as he was. My answer was also, cold I suppose, it was a simple "no, not really". This is the truth though. There was no need too lie to spare feelings, I don't need to do that and end up somewhere I don't want to be. I did have a very hard time hanging up, it was weird, I didn't want to say goodbye. Partially because I do still care about him and its hard to let go of that, but also because I don't know when I'll speak to him again. It's a very surreal experience.

Now I'm left with some studying and some tired eyes, but I needed to get that off my chest.