Heeelp ! Ummmm yeah plese read haha please.?

Umm okay im a ranga and i really really really like this guy . We have been friends since i was born (really good family friends) and now ive started to talk to him on bebo and msn and at first we were really getting along he made me laugh like no one else could .But now i think hes getting sick of me because sometimes he doesnt always reply and only in private messages he says xo never public messages on bebo . im soooooo confused , hes 2 years older and i feel its wrong to love him and if i tell him hell hate me, what should i do?