"Love the way you look at me," the 19-year-old star wrote. Alongside the caption, Bieber shared an intimate dark picture of the two. The "Beauty and a Beat" star took the selfie while looking at the camera, while Gomez hugged him from behind with a sweet smile.
Bieber and Gomez, 21, were photographed for the first time in months just one day earlier on Jan. 2. At the time, the young Hollywood stars were spotted riding Segways together near Bieber's Calabasas, Calif., home.
The reunion between the two past lovebirds comes on the heels of a radio interview Bieber gave with Power 106's Big Boy. "I was definitely in love," he said of writing his song "All That Matters" about the Spring Breakers actress.
He added: "[The breakup] affected us, especially when we are in front of so many people. It's such a public thing. It's just hard for the both of us. But, you know, she's a great woman. I love her to this day...I think we're going to be the greatest friends."
Bieber and Gomez split in November 2012 after nearly two years together. "It's been a really challenging experience over the last year because of their crazy schedules," an insider previously told Us of the breakup. "Selena definitely had some major trust issues with Justin."