File this one under "kiss and make up."
Just days after claiming she was single, Kash Doll is back in the arms of NFL player Za'Darius Smith ... and the two enjoyed a romantic vacation in the Caribbean!!
Quick refresher ... Smith -- who played for the Lions last season -- and Kash Doll are one of the newest couples everybody's been keeping an eye on ... but fans were shocked when she posted (and later deleted) on X last week that she was single.
The "Ice Me Out" rapper said a few days later she loves her man .