You and Ken have been friends since childhood, You liked him since the day he gaved you his sweater just because it doesn't suit him.

You wanted to confess but there's already a girl caught his eyes. You didn't want to end your friendship so you decided to kept it a secret.

One day you were waiting for him outside the classroom, you were kinda annoyed that he was taking so long, you peek through the window and saw the girl and him kissing. (In the story you are a boy and he's straight)