<human>: We were together a year, but broke up because he claimed he was moving to LA. I was very happy with the relationship, but at the end I felt like I had been lied to. Throughout the end of it, he kept gasllighting me to the point that I literally thought that the relationship ended because of me. He went to visit some girl in another city(an ex-roommate....I'll describe that situation a little later).We attempted to be FWB when he came back into town, but our relationship was definitely strained, and it erupted into a massive fight. He behaved like a child, while I was just looking for answers and some decent closure.
 
In a nutshell, he seemed like a pretty good guy who really just didn't want me around anymore....I still have no idea why. My only explanation is that.....he just didn't like me. At all. It all seems so unfathomable... But anyways, he had a lot of girl friends, and even lived with a girl(who he was in love with very deeply). I wasn't made aware of their relationship until the end of our relationship together. He and her had sex only once, but it didn't work out and she moved in with some other guy. He apparently never recovered from it, and even when we were together he would talk about her sometimes. I assumed that he was over it, but looking back, he really wasn't. He still talks to her about once a month. OUR relationship ended 7 months ago, and we have since seized talking to each other. I deleted everything to do to him...but I can't help but feel distressed and even a bit disturbed at how this relationship ended. 

It 'll definitely leave a bad scar....just knowing how I was treated in the end, and knowing how much better he treated all his other exes. Except me... am I in the wrong? I just can't get over it...and I can't figure out why he suddenly wasn't into me anymore. I just can't figure this guy out. Will he ever talk to me again? Why does he still talk to that other girl? I think I should take a break from dating...

Can you provide a brief overview of the text?
<bot>: ex made excuses for us to break up, still obsessed over an ex-roommate, but has ceased talking to me. Probably forever. I am bothered by how stabbingly sudden it all was.