Nina Dobrev is putting herself out there again months after her messy split with Shaun White! According to Page Six on Wednesday, The Vampire Diaries alum attended a Sundance Film Festival party for her friend Zoey Deutch's movie Gail Daughtry and the Celebrity Sex Pass - and she got her flirt on with a mystery hottie! A source claimed Nina was "flirting hard" with a man with a mustache and a beanie, and they described him as "hot AF." OK, girl! Nice! The insider continued: "She went up to him and asked what he was doing there. Then they swapped numbers.