When Elijah, Rebekah and Klaus Mikaelson pledged to be there for each other always and forever, they couldn't have predicted how much family drama can occur over the course of a thousand years (give or take a 100 here and there). Heightened vamp emotions make for some incredibly intense sibling rivalry. The remaining members of the Original family, free from the threat of their psychotic father, are reluctantly trying to put down roots in anticipation of a new arrival. But centuries of tantrums, betrayal, lies and generally bad behavior can be difficult to forgive and forget. Here are the 10 most dysfunctional moments from the first 9 episodes of Season 1.