If he really was in some kind of "closet", he wouldn't "like" any photos of muscular guys, on the contrary, he would have an anonymous secondary account to follow all those profiles and "like" their photos. Specially if we consider that he is Italian, and Italy is an "open" and "closed" country at the same time.
I feel that he exploits his attractiveness enough to be a person in the "closet", and being italian, that makes me believe that he is not "gay/bi", sadly becouse I want him so much, but he is impossible, he is so fucking platonic.