This is my first post in here so please bear with me. I'll start by giving a little bit of background. I am 20 years old, turning 21 at the end of the month. I have a great job, live on my own, am smart, decent looking, and drive a nice car. I have no problem flirting with women but have a hard time moving past flirting and turning it into something. For a while I figured that it was something I would learn in time, which hasn't happened. I am not the type who is looking for hook-ups, but rather a meaningful relationship. Right now, I haven't had a girlfriend since 9th grade of high school, which is a long time. Up until then I was on a normal curve relationship wise and was doing great. In my later years of high school though, I stopped caring about school and did not have anything happen in the relationship department. To be honest, I projected myself as an asshole and not many people liked me. During high school I met a girl who I really liked. I worked with her and all was fine and dandy. When I finally got up the courage to ask her out and she said yes I was ecstatic. Well, a few hours before I was supposed to pick her up, she called and cancelled. Being the cynical untrusting person I am, I drove down by our work to see if she was there. Low and behold she was, making out with the supervisor in his truck. Anyways, after that incident (I never told her what I saw) I have been a failure when it comes to women. I can talk to them normally, but cant get past that. I need advice on what I can do to move on with my life and not still be hung up on what happened 4 years ago... I have made leaps and bounds worth of progress in my life in a professional aspect and everyone at work loves me, but am failing socially and relationship wise. If you have any advice, I'll take what I can get but I don't know how to get over this barrier. Thanks.