We know that Demi Lovato is officially 'Unbroken,' but could it be because she's back with her ex-boyfriend, 'That '70s Show' star Wilmer Valderrama?

Yes -- according to Life & Style. The magazine reports spotting Miss Demi and the 31-year-old actor at 'Family Guy' mastermind Seth McFarlane's house party on Oct. 22, and apparently, the pair were looking more than just friendly. "They showed up together and made no effort to hide that they're back together," an unnamed source commented. "They were stealing kisses throughout the night, holding hands and just seemed to enjoy being together."

But that's not all -- the 19-year-old Disney star and her much older flame were seen dancing dirty to the party music, and "when they were seated, Wilmer had his hands on Demi's knee the entire time," the party-goer said. "He was being very boyfriend-like and affectionate."

The source insists that Demi couldn't possibly be happier about rekindling the romance, despite the fact that she and Mr. Valderrama broke up twice after they started dating in early 2010. Given that Demi went into rehab only a few months later, maybe the breakup was what was best for the couple at the time. We wish them the best of luck in giving love a second go!