Boy problem what should i do? help?

so this guy he tells me he likes me and then i start liking him a bit more and then his cousin started playing a joke on me saying that he asked me out and i wasn't sure if he did I asked him if he did and then he said "yes, i would do it face to face" and then i said yes i would go out with you and then his cousin told me they were joking and then his cousin was like dw i'll tell him we were joking and then he got pissed at me and told me he don't like me no more. and then later on he asked me if i liked him and im like i did and still do and he's like i do too and im like but.. and he's like yeah i know... and then at excursion he's like all lovey to me always coming up to me saying im his babey and when i wasnt with my stuff e had it and pretend it like it was me and him in bed and i know this because i caught him doing it when i came back and then like he said some other sweet things. and then on for his birthday he asked me to kiss him and i did a day after his birthday cause he didnt come to school on the day. and he also asked for an early one but i didnt know i got chickened out. and then the other day we were on webcam he kept asking me to lower my camera so he could stare at my he didnt say tht but just kept telling me to. and then he's like show me your bobos and i'll show you mine? and im like no. and he's like my downstairs?" and im like nooo and then he went all sad or soemthing. and then like just then he goes randomly on msn "hi bye forever" and im like wtf what did i do? why would he say that? i didn't do anything wrong did i? =s it hurts so much i asked him why he said that and he says because i did and im like it's like you hate me or soemthing what did i do? and he still hasn't answered. =( i really like him... but i've been hurt so much when these happens it hurts everytime he doesnt talk to me or ignore me. =(((