<human>: She dumped me out-of-the-blue last summer after we had been living together for more than two years basically being co-dependent. It hurt bad but I moved out, went cold turkey on contact, got myself into projects and working out again and seeing other women and after a good while I thought I had basically gotten over her. Would think about the relationship sadly sometimes when something reminded me, but it was fading further and further away in my mind. (For background I had had relationships before her, but this was the only woman I ever was really "in love" with or lived with) 

But recently I had to see her for the first time since the breakup at a mutual friend's party and I was warned in advance she had started seeing someone new and would likely bring him. Honestly seeing them together (only for a moment) wasn't the hard part so much as being hit with that knowledge in the first place. Since we broke up I had dated many women casually but none to the point where we were in any kind of real relationship. I've had to own the fact that I didn't properly acknowledge how badly I was hurt the year before, and now I feel even worse than when we actually broke up despite all the time and events that have passed in between. I'm trying hard to stay positive, spend time with my friends and keep dating but the pain of my loss is like a nagging voice in the back of my head that stays with me every moment of the day, even when I'm 'having fun'. I feel like crying a lot which is especially jolting because I almost never cry and only did so before the night we broke up. Has anyone had a similar experience and could give me tips on getting back on track in my recovery?

Can you condense the text into a few key points?
<bot>: Thought I was over ex until finding out she has a new man, now I feel worse emotionally than when we broke up, could anyone give me advice?