If we had to spend an eternity with our siblings, we’d probably get in a lot of squabbles, too. So we understand why Damon (Ian Somerhalder) and Stefan (Paul Wesley) don’t always get along on The Vampire Diaries, but when you’re stuck with someone for that long, it’s best not to hold a grudge.
Luckily for fans of Team Salvatore, Stefan seems to ascribe to that philosophy in The Hollywood Reporter’s sneak peek of Season 4, Episode 4, “The Five.” After Damon gets a mysterious call from Sheriff Forbes (“That’s...concerning,” he tells her over the phone), Stefan wants to know what’s up.
“Can’t tell you. Private. We’re in a fight,” Damon responds. After Stefan dismisses this — saying that while he’ll always be mad at his brother for bloodsharing with Elena (Nina Dobrev), he’s over it — the elder Salvatore tells him the news. There were no remains found in the explosion at the hospital, which means Connor (Todd Williams) is still out there.
Ah, so that's why Stefan doesn't get to go on the road trip to Whitmore College with Damon, Elena, and Bonnie (Kat Graham). This could be trouble...
Source: The Hollywood Reporter