Well you definitely shouldn't use those stereotypes to try to see if he's gay because honestly there are sooo many different spectrums that people are on that at this point it's really difficult to pin people down by those types of things. From what you're saying- he doesn't really seem gay to me. Hanging out with mostly guys is actually more of a straight trait than a gay trait. Maybe more details? More on the way you guys interact than his hobbies and IG behaviors lol.