I'm diagnosed with Major Depression, and ive only had one girlfriend in my life and I think when she broke up with me is when I developed depression and I've never fully gotten out of it. Its been over 5 years since that happened and I'm over her, but can you believe I was so sad that moment she broke up with me that I never asked her why, all she said was "Can we just be friends?" A couple of weeks later she already had a new boyfriend, I felt so hurt then, I started talking to people way less, basically depression took over. Now i'm 23 and I'm getting back into "The GAME" Also you can't wait for women to approach you, because it'll rarely happen. You have to approach a girl you like but don't show too much neediness because she will get turned off by that. Play this game for the next couple of weeks to handle approach anxiety to some degree; Whenever you make eye contact with a woman hold the eye contact until she looks away first, its hard im still doing it but im getting better. If she looks down and smiles then shes feeling something that you made her feel in a dominant way, you then may feel the urge to approach her. Do this for a week. There's a book i'm reading to Improve your "GAME" with women, too much info to tell you though, and I got no time to. Also find a girl that you can "click" with try not to go for a woman that you want only because shes "HOT"(My advice) unless you just want to get laid, your problem. It's hard when you find out the girl you like is dating someone else, but try not to think about it (that's the easiest way youre going to get out of that depression) Like the guys here said there are literally countless woman out there, who knows you might find another girl who will have a better personality than the girl you have a crush on, trust me you need to move on for now. Remember never limit yourself because youll never Improve "because I have terrible approach anxiety" thats your negative belief system and you are the only one reinforcing that negative belief system. Good luck!!