I feel alone and confused

So I'm a college sophomore who is double majoring in biology and computer information science. I have no friends anymore. The one girl I had as my friend turned out to be fake which was crazy cause over the summer we were getting close, we did everything to make sure we were roommates but know I don't even like her anymore. She ditched me for a girl she talked really bad about over the summer because they are best friends now. I never in my life had a real friend. It's sad. That's all I ever wanted. People always say go out talk. But they thing is older people already have their friend groups together. Or "clicks" has some would say. Especially the females. I always told myself I rather be alone than to be friends with a fake person. I'm just sad and alone. The only person I have is my boyfriend which he is cool but I always wanted that girl friend. Ya know