<human>: Can you condense the text into a few key points?

We were dating for 3 years. We had many fights and problems mainly caused by me (70% me 30% her). I don't even know how we managed to start dating to begin with. but regardless of that we did. We stayed together for 3 years. We broke up suddenly but still remained friends and even after almost 2 years of breaking up we still talk on a regular basis over text about our lives.

She now has a boyfriend which at first hit me so unexpectedly. But I didn't care. I rarely felt jealous or acted upon it after breaking up even if I knew she was seeing other guys (She never admitted). For the past 2 years we had small sexual encounters. Jus to know, I was very jealous and possessive during our relationship. 

I have been having sex with many girls over the last 2 years, due to the lack of self esteem etc etc. I was going over some old photos and saw naked photos of her/photos that I took, and I just boom thought, this is what I have been looking for with all those girls I was with. None of them stick for longer than 3 times of sex, mainly due to me not showing affection/opening up. 

So now I am confused as fuck. I have no idea what is wrong with me or how to fix it. I feel like I am halting my life because something is missing. I think I need closure on this topic and not sure how to reach that. Drop in your advice thoughts.
<bot>: Dating for 3 years, sex for 2 years on/off. Find out she has new bf, its ok with me. See old photos BAM! Nostalgia, regret and what not.