Please help me clear this up....

I really LOVE this dude and it sounds really cheesy but i fell for him the first time i saw him!... he was peed outta his head but i loved him!... i got to know him over msn and i liked him more and more... he's my best friends brother.... and he says he loves me and he thinks highly of me.... but arhhh... i duunno... :(

he had a girlfriend when i first saw him and i put up with him saying "id love you more ... but im faithful to my girlfriend..." and then.... he was single... i was so damn happy... but im so confused... because i dont wanna go out with him....

i love him more than anyone i have before!!! ive liked him from that day i first met him in hanley!!! omg!!!... whats wrong with me??? but now he has a new girlfriend.... but he still says he loves me and he thinks highly of me....

i cried last night because i loved him so much.. but then i'm too scared for if i ever go out with him...im not the gf type... im not good at that stuff... but i love him so much... my stomach does backflips when i speek to him and when i get a hug off him i die! honestly i dont cry over boys... but i do him... but is it love????

answer me this....

why do i love him so dang much.... but i dont wanna go out with him???

xoxoxox