The best thing to do is go out and try to find someone new yourself I know it's easier said than done, but try online dating just to give yourself a new goal

Find someone else that you really like to be around ;)

Try not to think about THEM too much. Branch out and meet new people :) socialize with different crowds and you have a potential of meeting someone you're interested in and if that isn't the case, you'll wind up with new friends and a better self confidence :)