Falling in front of my best friend

All of this happened in my last year of high school and the only one in high school after the pandemic, I was always an attractive boy due to swimming, 176 cm tall, not very muscular but toned, almond-shaped eyes and straight hair, I was always very energetic and being relatively handsome I was somewhat popular, I was never mean to anyone, on the contrary, I loved talking to everyone, playing basketball on the courts was one of my favorite pastimes, but there's a secret about me, I'm bisexual (I know it shouldn't be a big deal, especially in a high school as open-minded as mine) but in sports, they're not very effective with the LGBT community, and when I went to the high school locker rooms, I would inevitably see a boy naked and it really scared me to have an involuntary erection or to be seen as weird if they knew they were naked with a boy like me, and being so popular, I feared that everything would fall apart...

Anyway, during the pandemic, I met a boy a year younger than me, he was very fun to play with and joke around with, his name was Alejandro, fair skin, a bit shorter, and he had just started going to the gym, so he was developing an incredible body, we became great friends, and who would have thought that he would take everything from me, and now I'm dependent on him in more than one sense...

Everything started one day when I went to pick up Alejandro in my car to go to a party of a mutual friend, as always, he would talk to me about his conquests and how he got bored with how monotonous women were, he would complain that his last partner was ashamed to show her breasts, that someone like him deserved something more...

A: I'm telling you, friend, you don't know how frustrating it is when they don't want to innovate.

C: Hahaha, what do you mean by innovate, dude? I mean, are you looking for some kind of sex 2.0?

A: It's just that I love to dominate, to see their eyes and know that they're dying for me, that they can't get enough of me, has that never happened to you? Or are you not a man or what? Hahaha

C: Uh, sorry, but I like to fuck, I'm not into being a sexual sadist or anything like that.

A: It's not being a sadist, it's just that there's always a dominant and a submissive in any relationship, maybe the reason you've never felt that way is because you're a submissive.

He passed his hand from my ear, down my neck, to my shoulder, and I shuddered instantly.

A: Hahaha, I didn't expect that, brother.

C: I'm sensitive in the neck! Don't you have ticklish spots or what? I said, embarrassed and a bit annoyed.

He just kept looking at me with a sly smile.

A: You know, Carlos, you've always been interesting, remember that girlfriend of yours that you never wanted to tell me about.

Something inside me shuddered, my girlfriend was a boy from the arts school that everyone knew was gay.

A: I always tell you about all my...