Does he like me? BEST ANSWER TO MOST DETAILED ANSWER?

there is this guy who seems to really hate me but today, he was beside me walking down the hall and he seemed... nervous for some reason. he was breathing deeply and just staring at me. Like a bucking psychopath.. my crush was up ahead and I was staring at him and smiling as, well, i really like him.

the guy that "hates me" was looking at me and he followed my line of sight, seeing that i was staring at my crush, but then he turned back to me and gave me this very dirty look.

and he did this all day! anytime he saw me, he made a face and just glared at me until i turned away.

I told my mother and friend and they both said he might fancy me and was jealous... but i don't think so.

we rarely talk as he ignores me but when we do... we actually don't. he just mocks me or causes trouble and blames me whilst laughing. he stares at me blankly at me every now and then but sometimes he glares (like he wanted to attack me), like if i bump into him by accident. he'd narrow his eyes, sniff then walk off, like he thought he was someone...

I've never done anything mean to him and he doesn't act like this to anyone else, he's chatty and outgoing. he's so weird, and i kinda feel scared when i catch him looking at me, but i just try to ignore him. but he keeps staring and shizz. :/ Please tell me he's not interested. >_<''