Answer:
Be the kind of a friend other people want to hang out with.
Be interested in others, fun, involved in activities, positive, outgoing, reliable. Don't be so desperate for friends or a girlfriend that you let others use you or take advantage of you....you'll just look pathetic.
Take care of your mind, body and spirit; focus less on "getting a girlfriend" and more on having a fun and involved life.
And quit calling yourself a "fat guy." As my folks would say, Don't put yourself down, there are plenty of other people out there willing to do it for you!
Build yourself up in every way. You'll enjoy your life more and others will want to be with you (girls and guys).
money.