BOYS 11-15 PLEASE ANSWER THIS NOW!!!!!????!!!!!!?

ok, idk if i have a crush on my friend, i mean he can be nice, or a total jerk, he was nicer before, is it puberty???-is it me, i mean i am the same, plus he has been really competitive, he liked me last year, does he just have a wierd way of flirting, plus he is realy funny, if i tell him i like him will our friendship be over, i want to kiss him, plus he asked me for my number last week...but he is startin to piss me off, then when he says "I DONT CARE"- i take it to heart...do i really like him?-should i like him?-do most boys act like this, or is he just wacked????-wat would u do???-i wrote him a LONG email explain my feelins torward him...but he hasnt checked his email in 4months...but if i really like him...well is he worth it???-or am i confused,he may just not be worth the trouble...