The on-off couple posed in a sweet photo posted by Bieber on Saturday on his Instagram account.
In the snapshot, Gomez, 21, cuddles Bieber, 19, from behind, looking wistfully at the "Boyfriend" crooner while he peers directly at the camera.
"Love the way you look at me," he captioned the pic.
The photo comes two days after the pair were spotted riding around his Calabasas, Calif., neighborhood on Segways, quickly fueling speculation that the duo were back together.
The couple's tempestuous relationship has seen its share of ups and downs, with a high-profile breakup in November 2012 followed by repeated sightings of them getting cozy together.
Reps for Bieber and Gomez had no comment.
During a concert last October in Brooklyn, Gomez broke down onstage while singing "Love Will Remember," an emotional ballad that fans speculated was an homage to Bieber. However, Gomez had another explanation. "Ended such a beautiful show in tears because they wouldn't allow me to Instagram," she wrote.
Good thing those Beliebers kept believing.