You'll Never Guess Who Rapper 50 Cent Is Dating NOW!!!

So 50s smashing another SENIOR CITIZEN . . . this time it's legendary singer CHAKA KHAN. The two came ARM-IN-ARM to last night's VH1 Divas special . .. and they sat together all night - looking like a couple.

We're starting to wonder if something is WRONG with dude. We understand the whole VIVICA thing . . . and we SORTA got the Gayle thing . . . but CHAKA is old enough to be his GRANNY!!!