Lil Wayne And Christina Milian -- We're Not Breaking Up in The Money Dept.

Lil Wayne and Christina Milian have broken up, but not professionally.

The couple announced their split this week, using the standard "our-schedules-make-it-difficult" reason, but we're told one thing is clear ... she's not leaving Young Money -- because it benefits both of them.

Christina has an album due out later this year, and neither wants to derail it.

This wouldn't be the first time Christina worked with an ex. After divorcing The Dream, she continued with him on her music career.