Pop Sugar interviewed Kat Graham at the Global Green Event; the singer/actress weighed in on the tension between Bonnie and Elena. She thinks they'll patch things up, but she says she can't promise anything. Uh oh! Need your daily Vampire Diaries fix? Like us on our Facebook page at facebook.com/TheVampireDiariesFansite, or follow us on Twitter at twitter.com/TVDWetpaint!