Used to be bullied in 8th grade by a single person (really fat and strong) but for no real reason. He always put me into a closet and leaned against it which made it impossible to escape because he was three times heavier than earth.

That was a really bad period in my life. I didn't want to go to school anymore but fortunately I managed to do so. Over the course of the time it became better as I succeeded in establishing a "fake friendship" with him.
And I was semi-bullied in 9th grade for getting off with my best friend quite publicly.

I didn't care about showing others I'm gay because I didn't even know how it's like to be gay back then - although I never really told anyone of them. But playing footsie with other boys made it pretty obvious I guess. There were no real bad reactions, just a "fag" being shouted at me here and there but nothing I couldn't deal with. The only consequence is that I'm not publicly gay anymore because I'm afraid of negative sanctions - but I'm willing to change that soon.
Yesterday a friend told me that one of her classmates has been taken into a psychiatry because of being bullied in secondary school. She said that she didn't even know her real name, she was just known as "google eyes" ("Glubschi" in German, the short term for "Glubschauge"). She never seemed to be affected by it - she was like "Say what you want, bro, I'll do my thing no matter what". But the feelings she tried to swamp out accumulated in her subconciousness and broke out not too long ago (she didn't go into detail so I don't know why she was taken into the psychiatry).
Jam it back in, in the dark.