Ariana Grande & Chris Brown hint at collaboration on Twitter: new 'love song' released in March, Breezy croons about Karrueche Tran or Rihanna after rehab stint?

Chris Brown is scheduled to leave rehab this week (Thursday, February 20), and the hip-hop crooner's already set to jump back in the game! Apparently, he recently collaborated with Nickelodeon sweetheart Ariana Grande. The two singers recently shared some new song lyrics on Twitter - check it out.

Karrueche Tran's beau tweeted:

@chrisbrown: "i dug a single seed into the ground, I hope it grows."

The 20-year-old songstress then followed-up with:

@ArianaGrande: "In a year or two if you're around, you'll see a rose."

Sounds like a romantic love song! Is Breezy rapping about his ex-girlfriend Rihanna (again)?

The two make an unlikely pair, but the duet sounds very promising. 

Grande later responded to a fan, claiming that the track will hit airwaves in March.

Meanwhile, Brown's romance with his current model girlfriend continues growing:

"He's already told her that once he leaves and gets his affairs in order, he's taking her away - just the two of them," an insider tells Hollywood Life. "It's not 100 percent that he's going to leave [rehab] that day [Feb. 20]. He has a court date so we'll see." 

Wonder if Tran still finds RiRi as a threat?