Gomez, 25, and Bieber, 23, were first photographed reconnecting at her house in October, shortly before news broke that she had called it quits with The Weeknd. Since then, the two have been nearly inseparable.
"They’re really happy and enjoying this time together," a source told ET. "They’ve both grown a lot over the years and are excited to have reconnected."
"They are together all the time," the source added. "They're so happy and having so much fun together."