down in the dumps for some odd reason....

Maybe the girls that you are approaching realize you have a girlfriend that is crazy about you. That can drive girls away..lol. I think that if you are not happy in your relationship...you should go ahead and end it so she can find someone that loves her the same. Believe me...you aren't doing her any favors by "feeling sorry for her" and keeping her on a rope. You will be better in the long run too. Life is too short to stay in relationships that make you sad.

I wager there is something about yourself, attitude or behavior, that comes across wrong, that you can't see. This is just a guess, but find someone that you are friends with, that you trust enough to tell you the truth. And just ask them. I'm one of those people to those who know me. If they ask me something, I'll bluntly tell them exactly what I think, and they know it. But they also know, that unlike me, most people will give them fluff, and blow smoke in their face. There must be someone you know who can tell you what it is you are doing, that turning people off. Obviously through the internet, I can't say what it is (or I'd tell you straight up). Maybe you are acting too insecure. Or perhaps you are so insecure, you are acting over-confident and arrogant. I really don't know. It could also be as simple as you meeting girls in the wrong place. This is hard one for many guys to grasp, but going to the bar, or club to meet girls, is a bad idea. Girls in these locations get hit on often, and they knew it. Normally their reaction is no from the start because they assume you are a lonely self-absorbed jerk looking for an easy score. Go someplace where there isn't dozens of guys randomly hitting on girls. If you are person of faith, go to a church, and do things with the groups in the church. But I still recommend finding someone brutally honest, and asking them to tell you what about you is a negative. If you are brave enough to hear someone critique your life, you might find the answer you are looking for.

You have a cute girlfriend who loves and adores you and you're having problems? I think you'll be having more problems later if you don't try fixing yourself up.

this really breaks my heart dude. if you can't realize what you already have, you are very close minded. yes you're young and want to adventure out and try new things but when i was 18 my bf at the time called me the day of our 10 month anniversary and said he wanted to be single again. it literally tore me up. now im not judging you in any way at all its just shocking that you have a girl who loves and cares a bunch for you and you don't feel the same. please i know you're a guy but follow your heart and if its to move on then don't drag your gf down. break up and move on. good luck with everything