I have to admit that since I've accepted my orientation

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I have to admit that since I've accepted my orientation (gay male) I have a problem. Quite often I see actions of heterosexual men as "gay", I misread their signals. For example, my brain is telling me that petty joking around is flirting. I don't know why. Since I opened up to myself about how I feel I kinda see world in pink, like at least 50% of men I see are eager to try some hot stuff.
The fact that I'm going to 99% male school (18 yo here) isn't helping. Do you think that maybe, just MAYBE my classmates could develop some affection to other men because of lack of contact with women? I mean, if Kinsey's Scale was true then men who are at least slighty gay could do something with each other, right? Or is it just joking around?

tl;dr
Did guys in your higschools acted gay for fun?