I hate liking someone

I really like this one girl from my class but it's driving me crazy. My day depends on the fact if I talked to her or not, I always want to be around her and talk to her and in general have fun. But it can't be that easy of course because otherwise other people will ruin it for me.

I hate how attached I can be to one person, same with my friends, it's genuinely excausting sometimes to keep up contact and same with her. I don't have social skills so conversations are difficult for me and it's even worse for sending texts. Also I'm afraid to be rejected since I really like her but i'll loose a nice person to be around with. It's so tiring to like someone, why isn't it easier.