More than (c) introverted, I was reclusive. Hated the other students, declined to have anything to do with them. Only Senior who refused to have his photo taken for the school yearbook (they still printed my name against my wishes, with a blank space where the pic went), also boycotted my graduation, for which they withheld my diploma for several months. I've never attended a HS reunion (45th due next), and if I did I doubt anyone would even know my name or who I was. Which suits me just fine.
Today I'm a trifle bit more sociable, but on my own terms, which school never offered me. The big difference was my coming out, and now I have scores of friends that I never had in school, or at any time in a previous adult life. And most people tell me I'm friendly and a pleasure to know, though I still tend to be stuck in my teenage mindset, and always doubt I can be this popular for once in my life.
So when asked what's the best thing about being gay for me, I rank the sex second (though it's damn good), but top of the list is having a real life, a happy life, a life with a loving partner and so many wonderful friends. None of which I ever had in high school, as a teenager, that makes today, this minute, the best of my entire life.