I've never felt so alone...?

I just turned 19. Almost all of my friends are out of town for uni. The one friend I did have ditched me last minute on my birthday to go to a frat event. The others promised we'd party on the weekend. One didn't come back, the other is back but says he's got homework and one just won't answer his phone. I'm in 2nd year uni and I basically go to school then come home. I have people I lknow but no real friends that I hang out with. I basically stay in every weekend and I don't even have a girlfriend. And every now and then when I do like a girl, I think about asking her out for months then always out. It's weird...I'm an average looking guy and no one would prolly ever ume that I have this problem. I use to be so popular in middle school and ever since then...I've just been slowly and slowly falling apart. My grades are good but sometimes I wish they were **** and I was just out having fun and not being so alone. Sometimes I worry that I'll die alone too...WHY IS THIS HAPPENING TO ME!!!