UGH... So confuzed

I am really confuzed and i cant hold in my secret anymore cause ... its too hard. It is not really about me, I am 12 and a 21 year old kinda likes me, ALOT. Ugh his name is Justin and he is a kid at my schools big brother... if you guess it right then i well tell you... i am not saying who the brother is over this cause then .... well eveyone well know, message me or whatever and i well tell you... then give me ADVICE.... Ugh what to do?