Sources connected to both of them tell us Quavo's been hanging with Chris Brown's ex-GF for a few months, and while it started in the friend zone ... they've gotten much closer lately. They've juggled their schedules to wedge in a few dates.
That includes this past weekend in Biloxi where they rode off together following Migos' concert. We're told neither's calling it "exclusive" at this point -- they're just enjoying each other's company.
Sounds a lot like happily banging ... to us, anyway.