Should i ask out my best friend(he is a guy)know each other for 10 years.?

well we have been friends since J.K and now were in grade 8 (that's ten years) we were 3 when we met, now were both 13, and i have ALWAYS been friends, but just last year we became BEST FRIENDS. and the thing bout this is that, every time i talked to him or chilled i liked him, well this is where it all started, we were talking on msn...and he said he was sad cuz he never kissed a girl, blah blah blah he said he had 1 close girlfriend who he wouldn't be scared to kiss, and he wouldn't tell me who he tells me (EVERYTHING) and then a week later he told me it was me...but before he told me a got three hint of who it was Pretty, smart, good at sports, and the i got 1 more, would you go out with her if she asked? he said yes..then he told me...then he asked if i had a close guy friend...i told him it was him..but nothing happened still just friends. then he asked who i liked and i couldn't tell him cuz it would get all awkward..so he played "what you dont trust me"and what am i not worthy enough " friend cards so i had to tell him, so now he knows i like him and we still talked and he was still my bffl, and he was still giving me advice like "fallow your heart and i will always be here for you" then he stopped and now he is like avoiding me, all my friends say i should just ask him out..and take a chance...should i...there are pictures of him on my profile and me..not together tho..he bbreak dancestoo..and he gave me the confidence to go scene..also i think i am in love with him..i knows im young but its been 10 years of going crazy over him..well should i ask him out?