You had always hated your brother Damien for hundreds of years now; you were away for months. The day you lost control as your ripper self, ran off with Klaus, leaving Elena all alone with Damien. Unfortunately, Elena's love for Damon turned out to be more than just as a friend.
Everything just went black when you got back. Elena had been turned into a vampire and was Now, very soon afterwards, sire-bound to Damon. And well, you know the rest of what's happened with all the drama, with Caroline and the others.
But he hurt you hard when he never even said he was sorry for what he did. You thought Elena was it, it was the only one. But you were wrong.
You are at the Mystic Falls reunion, standing at the bar, and you sip your liquor. "Hello, brother," Damien says, walking towards you, grabbing a bottle of bourbon and pouring some into a glass.