High school is hard enough, without being a witch whose best friend is dating a vampire who's also your sworn enemy. But Katerina Graham says that Bonnie, the character she plays on the CW's Vampire Diaries, is much stronger in Season 2. In other words, she won't be hanging out after school with vampires Damon (Ian Somerhalder) or Stefan (Paul Wesley) any time soon. Graham tells TVGuide.com how Bonnie's new powers will alienate her from besties Elena and Caroline, how she'll get back at Damon and whether she thinks Bonnie should have a cute warlock boyfriend.