<human>: I've always been a very emotional person...almost to the point of having mild OCD about other people. It's my cross to bear. After two years of a great relationship with my first gf, she dumped me for another guy. I was totally blindsided and devastated. I immediately went complete NC (social media too).

Things slowly but surely improved for me. I had small flings (of physical nature only) with other girls. I even started to get small crushes on other girls as well. I haven't seen my ex in two years. But I still think about her every day, and am still angry and resentful for her leaving me for another guy. This has caused me to be very apprehensive to opening up emotionally to other women.

I really doubt she thinks about me anymore; she's dating someone else. But at the same time I still catch myself having thoughts of somehow getting back at her or getting back at the guy she left me for. Thoughts such as showing off another girl in front of her, or even sometimes thoughts of stealing her back.

I recognize how unhealthy these thoughts are, especially two years after the relationship has ended. I'm frustrated with myself for being unable to move on, but at the same time I'm still deeply hurting and still mourning the loss of my first love. I've done everything reddit has told me to do: go complete NC, improve yourself, workout. My professional career and my physical fitness are better than they've ever been. But I'm still dealing with this rut. I'm still upset. I can't seem to let go.

Maybe I'm having trouble forcing myself to want to let go. Maybe I can't shake the subconscious desire to have my ex back. I don't get it. I don't get why I'm such an emotional wreck. Everyone has told me "dude, it's time to move on." But try as I may, I can't, and it's torture. It's evil. Why in the world does this kind of pain still exist? And why do I bear all of it while she bears none?

Can you summarize the given text in a few sentences?
<bot>: Was dumped for another guy two years ago! I still am reeling from it and I am truly frustrated with myself for being unable to move forward mentally despite excelling physically and socially.