Could it be love?

So I'm 14 and I have a huge crush on a guy from school. Like, whenever I think about him my heart rate goes double speed and I can never get him off my mind. I get really pissed off and in a grump for the whole day if he's not at school and I can't help it. I know this sounds really stupid and kind of petty and stuff, but I was wondering if I could be sort of in love or something?