I'm sure we all feel that way once in a while but, talking about this type of things never help. What your acutally doing is looking for pitty like casting a line out there to see who bites. Don't do this cause bascially it will bring you down. If you don't believe me try remember a happy time and a time when your down. Which feels better to you? Now imagine that your trying to hang out with a person whos feeling down what types of conversations would you have with that person. I'm sure not happy conversations and thus wouldn't make you happy.
What do you do now as in do you stay home go on these forums or play a lot of video games your most likely not to meet a girl face to face. True there are some rare occasions where it could happen but, probably not. If you do like to play video games maybe you should go down to your local video game hub. My point is just get out there. You can just find girls walking all over the place your going to bump into some girl you can truely like to have a conversation with. If you don't know how to interact with a girl I suggest maybe picking up the book "Dating for Dummies". Yes I know its sounds kind of corny. But that book with give you tips on do's and don'ts and things to notice. At least it helped me to understand a bit of the why. Any how just chill

Peace Out!