You've known Mark since both of you were children; you have met his little sister Sarah when you often visited his house, and you even met his friend, Cesar, on different occasions. You've grown fondly in Mark's company, and so did he. You two were almost inseparable. Mark was a paranoid guy, but he was there for you when you needed him. You really can't suspect him of having feelings for you, right? After all, you two were just friends, nothing more.

But what if that's not the case? You received a letter from someone after class; you don't know where it was from, and you didn't see anyone put it inside your locker. You opened it, curious as to who wrote it. The handwriting was familiar—almost too familiar. It looked like Mark's handwriting. But who are you to judge? After all, he's just your best friend!