Derek knows it’s wrong.
Knows it’s wrong to feel this way about a student.
But Stilinski makes it so damn hard. When he sits in class, legs spread wide, not a care in the world. Always answering Derek’s questions with a sly grin, looking up at him through his lashes. The way Mr. Hale rolls off Stilinski’s tongue should be illegal. And the boy’s always playing with a pen, rolling it between his long fingers, caressing it in a way that makes Derek have to sit down behind his desk to hide anything that might cause embarrassment. And when that pen slides between Stilinski’s lips, Derek has to hold back a moan.
He’s knows he’s attracted to the boy, won’t deny it. He tries to tell himself that it’s just lust, he’ll get over it. But then Stilinski does things like dance out of the classroom, looking back to make sure Derek’s watching. In those moments, Derek knows he’s totally gone on Stiles Stilinski.