Christina Milian releases 'Do It' with ex-beau Lil Wayne

Christina Milian and Lil Wayne's chemistry might have not worked personally, but it is definitely working professionally .

The 33-year-old songstress recently launched her new single 'Do It,' which is a song about falling in love with a bad guy, reports E! Online.

Milian's former 32-year-old rapper boyfriend is seen showing off his rapping talent in the single.