In this clip from The Vampire Diaries, Damon and Stefan bond over Katherine. Sort of. The bonding is interrupted when Stefan tries to poison his brother.
In "Friday Night Bites," Stefan tries out for the football team; while Caroline and Damon reveal their relationship. Watch each development in this clip.
Stefan bonds with Caroline in this clip from The Vampire Diaries; or at least tries to. He's clearly intrigued by her, especially the scarf that is covering up her neck. Watch and see what we mean.