I hate people

I am having a hate people time in my life at the moment. I really just hate almost every person I come across.
Rationally, I know it's because I'm stressed over exams and UKCAT and BMAT and uni shiz etc etc, but its very hard to remember this all the time.
I'm pissed at one of my best friends, cause she's basically using various guys and stringing them along, and she's going to wind up getting hurt one day because she makes herself so easy. I think she actually likes one of them which makes it worse cause she's just ruining it for herself and then she'll moan.
My boyfriend's pissing me off just by everything he does. He got his ear pierced, I mean, what is that?! And then he said he's take it out if I hated it, which is annoying because it makes me look like a bitch and also, he shouldn't change something because I don't like it, that's just weak and irritating.
My sisters are being generally annoying as per usual.
I'm annoyed with myself because I can't stop thinking about this other guy, even though I haven't spoken to him since Tuesday because we argued, and I'm making a point. Why do I want to be friends with someone who has no interest in talking to be and sees me as a nuscience? God knows. I have a perfectly nice guy who likes me and I'm with, but no, I couldn't possibly be happy with that. And I'm just hurting myself by thinking about him, but I literally cannot stop. If you have a minute, listen to 'Need You Now' by Lady Antebellum, that literally describes almost exactly how I feel.
Basically, alone. Just really really alone all the time, and like no one cares and I don't like anyone and just alone.
Forever alone.
Bitch out.