Pleaz help me im new at this!!!!! guy trouble?

Hi....ya i have this HUGE crush on this one guy....he is like 2 years older but he is really nice and we have been friends 4 like 2 years...we have a lot of fun when we hang out but all of a sudden im starting 2 like him more than just a friend......he is really nice and fun 2 hang out and talk with.......i think that he likes me 2.......................he is all of a sudden bein nicer 2 me 2 and asking me if im okay or if everything is allright....(i have lots of homelife issues with my parents and their estranged ways) its nice....but girls wat should i do? and as 4 guys how can i be sure that he likes me 4 real?