Help me figure out if my best friend is gay or not

If he knows ur gay, he could just be teasing, messing around, being playful in the way college-hetero guys do. My concern is if there is any manipulation involved from his end, straight guys like the attention. Also, u already fucked a toy in front of him lol

I understand the friendship, it is cool to have someone to be open with bout these things. I cannot fathom youth in the military but it sounds hot and like a sexually frustrating experience lol

You claim to have not been attracted to him, so where/when did the feelings start? Once you came onto him one drunken night and he started pulling away? Change can be scary.

Best move is to apologise to him for the night. Take a few steps back and reassess. If the friendship continues, great. If not, then there's ur answer.