Lonely Day Again

I can't begin to explain how long I've been lonely. All of my friends are either in relationships or have no want for a relationship and hook up all the time. I don't hook up, I just never have, the reason being it's never come up. I don't really have anyone to confide in. There's just some stuff you can't tell your roommate and friends. I'm tired of not having anyone to live to see, or be with. I don't do anything fun, nothing really makes me happy, and partying isn't my thing. All of my close friends are telling me that someone will come along, it's worth the wait, and to not just settle. I'm getting really tired of waiting and not getting any less depressed.