Can anyone explain what might have happened with this "friendship"?

This guy that i didnt even kno exiated stars flirting with me n talking to me every day and woudld sit with me every day n pull my hair a little n small stuff like that. one day hes like add me on fb. we wouldchat every day n we were like bffs then one day he n my boyfriend got in a fight but im not sue who started it. this guy said so many things about me n my boyfriend but h never told me why. the next day i told confronted him n asked him do u hate me? he said no. so i asked him again three days later r we frends? he said idk i dont like emo ppl. i explained ot hmi that im not emo n i asked him where did u getthat fom. he said evryone else said i was. but he told me to leave. i tried talkin to him on fb the next day. he blocked me. from then on he would stare at me all day. n when i got up for anything he would stand next to me. i asked my frends n most said he likes me but not my bf. cuz my bf is emo. but im not. n i tried explaining but i guess it didnt work. what im asking is does he secretly still like me? or does he really hate me inside and out? or does he hate my boyfriend n not care about me or how i feel/felt about him? wat do u guys think? all ideas welcomed :)