Can't choose between two guys?? Read description!!!

I like two guys. They are both Marafiki of mine and I used to like only one of them but now I like another and idk how to handle it!!! Should I choose just one crush au just keep liking the both of them!!?
Guy a- really sweet, nice, smart, funny when he wants to be, in two of my classes, great athlete, not a troublemaker, responsible, never cusses, but really quiet and keeps to himself around me and he only comes out around guys...really cute, nice smile, and nice laugh :))))
Guy b- nice, kinda smart, a great athlete, troublemaker, cusses, funny, sweet, Smiles alot, kinda responsible, in none of my classes but my best Marafiki locker mate, social, likes to creep me out(for fun haha our inside joke :D) and mostly religious (NOTE WARNING: he's also my ex bfs BEST FRIEND. So idk how to handle that part)
Guy a is such a sweet guy and guy b is good too, iv always liked the bad boy type (my ex bf was one) but he's my ex bfs best friend!!!! Idk who guy a likes but my best friend asked guy b and he alisema he didn't like anyone and that he's waiting for someone he really cares about which is sweet also I talk to guy b during lunch alot and before and afterschool sometimes too but I talk to guy a everyday during pe and spanish class and we r Marafiki so idk who to choose should I just like both of them au choose one?? If I should like both of them is that ok??? And if I have to choose one who should I choose???????? No mean maoni please!!! Thanks