Random question

So this has been bothering me for a while now. All my friends in my friend group are in relationships and have been in multiple relationships in their lives, while I am the only single one and have never had a boyfriend ever. And Im pretty sure no guys like me at all. Is there something I'm doing wrong? Ive pondered this for a while and I dont get it. I dont act any differently than my friends and Im not exceedingly repulsive or annoying (I think). So whats wrong with me?