when and how did you know you were gay?

mine was when i was 13. i always thought one of my friends in middle school was good looking…too good looking. a month later we had a sleepover and he took his shirt and shorts off to change… and that confirmed it. side note, did anyone else find the guys on underwear really hot? when i get new underwear, i kinda can’t help but stare at it for a bit until i remember that i’m in public and people could notice that i’m staring. also, i’ve recently fully accepted myself as gay and that’s really helped me mentally. for a few years i would beat myself up about it out of shame. anyways, i was just curious about when and how you found out you were gay?