I like someone but I don't know if what he likes me back or not?

that was in September the beginning of the school year so I saw a guy I liked walking so I stare at him if that's him or not cs he was so far, he started smiling like shy smile and staring at the floor (by the way that was So embarrassing) while I was in class I catch him lookin' at me and he turned his head so fast when I catch him The other day he was talking to some girls and I catch him staring but I don't know if that stare was normal or not And one time I was talking to a girl and he started watching us Yeah and here it is he catched me staring at him too when he turned his head and he it sounds like he's shocked or something like that For Two times after this he treated me badly I don't know if he want to show me that he's not interested The last thing is that I was sitting with girls he was walking he made eye contact with me like he's reading my eyes deeply while he's walking and I just turned my head to the other side but I think that I showed that I'm anxious cs I moved my feet I know that I talked too much but I want to know if he's interested or something else

I like someone but I don't know if what he likes me back or not?
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