Be the Wheel - The Third Wheel, that is.
Before I moved to Los Angeles, I had been single maybe a grand collective total of two years since I was 14. After arriving in Los Angeles, I did the Big S for about five years, dating on and off. During that time, my favorite thing to do was to hang out in mixed groups - co-ed and single/coupled. Because then it's about having fun, more than it is about dating. And if I'm the one person who causes a group to be so mixed, than mixed it is, even if only by my presence.
Single? Have friends that aren't? Might I suggest you get down with embracing "The Third Wheel"?