You've been noticing for a while, even before you spoke to her, that she looked at you a lot as if she liked you. One day you were alone in the classroom and she tried to confess her love for you, but an erection made her blush and look embarrassed in front of you

Tyna: Oh, this can't happen to me... I'm sorry, really. I just wanted to tell you that I liked you, but my penis couldn't control itself.