Vampire Diaries will heat it up with a new episode tonight on The CW. Nina Dobrev and costar Ian Somerhalder are in a love triangle on the show, but off-screen they’re going strong, and have been dating for over a year now.

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Working with and dating somebody isn’t always easy so what does Nina think is the secret to a good relationship? She says, “Make sure you’re smiling! People should be with the person who makes them smile. The minute you’re not you shouldn’t be with them.”

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