Credit: Instagram/badgalriri

Rihanna's relationship with Chris Brown may be "Nobodies Business," but that hasn't stopped the "Diamonds" singer from dropping hints about it online.

On Saturday, Nov. 24, the Barbados-born superstar, 24, shared a photo on Instagram of her on-again/off-again beau, 23, lying shirtless in an unmade bed with a Simpsons-themed comforter. Brown's face is not visible, but his many tattoos are on full display, and his head is resting on a Bart Simpson jacket -- the same jacket he wears in another Instagram pic posted on his own account.

In fact, Rihanna and her rapper ex have been spending a lot of time together recently. On Wednesday, she boarded a private plane to jet to Berlin, Germany, where Brown had a Thursday concert for his Carpe Diem tour.

"All alone in my big ole jet!!! See u soon lover," she tweeted on her way to the European city, where the two spent Thanksgiving together and were photographed at Adagio nightclub.

Still, both stars have insisted they're not back together. Rihanna, who just finished her whirlwind 777 Tour, claimed in a recent Facebook Live chat with Bravo's Andy Cohen that the two had not rekindled their controversial romance, despite several recent public displays of affection that suggest otherwise. And Brown told Power 106 radio host Big Boy that they were "working on [their] friendship."

"As far as our personal life, I think people just got to give it a chance -- or not even give it a chance, but shut the hell up," he said. "It's me. At the end of the day, whatever opinion they have ain't going to change nothing I'm doing."