When I was in high school, I knew a girl named Heather. One year she cut her hair short, started wearing men's clothes, stopped shaving, etc. and she said multiple times "I am a gay man." At that point in my life, I didn't know what transgender people were. So I thought she was joking, or meant that she wished she was a gay man, or that she meant she was just flamboyant like the stereotypical gay dude. I never once called her "he" or used the male name she gave herself (I forget now what it even is). So, classmate, if you're out there, I'm sorry. I'm so sorry. I regret these actions with every fiber of my being. I'm sorry that, in my ignorance, I pushed you away and hurt you and lost the friendship we had before we could become real friends, and not just "at school" friends. I hope you're doing well and I wish you the best.