WASHINGTON D.C.: Disney fans had an explosion of nostalgia last night (on Wednesday), thanks to Demi Lovato and Joe Jonas. Not only did these former lovebirds reunite on stage during Demi and Nick Jonas’ tour stop in Washington D.C., but they decided to give the crowd a performance they’d never forget by whipping out their throwback duet “Gotta Find You” from their 2008 Disney film Camp Rock. The audience understandably went wild as the pair went into song, and Lovato followed up with Mitchie Torres’s “This Is Me,” with Nick on guitar. Joe shared a photo of himself hugging Demi on stage with his followers on Instagram, and wrote, “Sharing the stage with @nickjonas and @ddlovato in DC last night! Surprising Demi with Gotta find you was something I will never forget! Thanks for having me guys! Amazing show you two put on. Proud to have such talented and wonderful people in my life.” Lovato commented on Joe’s post with, “Love you.” Demi and Joe dated for just a few months in 2010, three years after first meeting while working on the Disney channel’s Camp Rock, and although their romantic relationship didn’t last, the singer tells us he and the brunette beauty are very close now. “She’s family,” Jonas told. “We’ve known Demi for so many years. We’re performed with her, toured with her. She’s just incredible. It’s not always the case,” he continued. “Sometimes you have to know when to fold the cards. I don’t think of her as an ex. We’re really good friends. We’ve gone through so much together and we’re really close now.” In a recent joint interview with Nick for Billboard magazine, the 23-year-old pop star joked that her time as a Disney star still haunts her to this day. “We joked around that it was Disney High, except we all were shooting shows and really overworking,” she explained. “I joke that I sometimes have PTSD after leaving the channel, because if my schedule starts to get too busy, I rebel and I get bitchy.” But let us not forget that Disney also gave us some extremely memorable moments, like this duet, that we all got to relive last night on stage.