Does he like my friend?

Alrighty so, my friend thinks this guy likes her, an im in the same cl with them, so its fun to watch XD, cuz i know he shows signs to her a little, but i remember one day she thought this cute celeb was hot, an he saw it an said something like "he looks pretty gay" i said to him" ur just jealous"but the thing is he didn't say NO! so wat u guys think?he rly jealous?