MTO EXCLUSIVE NEWS: Nelly’s Gonna Be UPSET . . . Cause An NBA PLAYER . . . Just PROPOSED MARRIAGE TO HIS EX . . . And She Said YES!!!!! (PICS)

: Rapper Nelly is about to go KRAY KRAY!!! just got word from a ROCK SOLID SNICTH that his GF Tae Heckard just got ENGAGED to her new boyfriend, NBA balle Brandon Jennings.

Tae and Nelly were dating HEAVY for the better part of the last YEAR. She broke it off with Nelly – when he started messing back with ASHANTI. But we’re told that Nelly was SORRY . . . and wanted to get her back.

Well it ain’t work. While Nelly was FOOLING AROUND . . . NBA baller Brandon Jennings started WINING and DINING Tae . . . and she eventually FELL IN LOVE. Brandon reportedly PROPOSED TO HER this weekend.