A day after Rihanna helped Brown celebrate his 19th birthday at a Manhattan club, the pair got affectionate in plain view of other concertgoers.
Brown draped his arm around Rihanna, 20, as the two danced, clapped and sang along to the short concert. As West left the stage, Rihanna leaned over and planted a big kiss on Brown. The couple then retreated to the back of the restaurant, where they hung out with friends.
But officially, they're still playing coy. An hour after the concert ended, the couple retreated out the back door, posing for pictures – separately. Brown and Rihanna both stopped when fans asked to take photos with them, but they declined to be photographed together.
Although they've been spotted getting cozy from Europe to the Caribbean – including during a romantic vacation in Jamaica in February – Brown and Rihanna have never publicly confirmed their relationship.
Earlier this month, Rihanna shared the most information yet when she told Elle Magazine that she and Brown had become "very close."
Reporting by ANDREA DESIMONE