OMG I feel like I'm in GLEE with the state of my love life lol need some advice people. TEN POINTS :D?

Basically this has been going on for a while now. I like this guy i was pretty sure he liked me because of the way we are with each other anyway last year i admitted i liked him he told me he was straight and acted weird for a bit but then went back to normal with me which was our weird sort of relationship. Its been this way now for the last two years. He had a girlfriend when i first met him but he dumped her soon after and hasnt been with any girls since. He literally harasses me and torments me, flirts and fights and always wants my attention. Anyway recently i lost a lot of weight and everyone tells me im looking hot at the moment and the other day my friend told him a few guys had shown an interest in me and she said he looked heartbroken. He also stole her phone just so he could text me off it and prank me. He knocks on my door constantly when he visits my housemates and bangs on the wall. listens when im in the shower and bangs on the door and i dunni its a weird relationship he takes the piss out of me in front of people and we argue he says i made him love arguing and stuff. anyway i dunno what to do? I like him alot but dunno do i wait for him or what? do you think over summer hell have a realisation? :) help haha