Emptiness...

I've had this empty feeling inside of me for the past couple weeks. At first, I thought it had something to do with school or band. Then it hit me. I feel more and more like a third wheel everyday. All the people I always hang out with have boyfriends or girlfriends. They make me feel...awkward. And somewhat lonely. I'm perfectly fine staying single, but it's really starting to get to me. What should I do? Comment.