A song recorded by Rihanna and Chris Brown years ago has leaked online.

The former lovers' duet titled "Put It Up" surfaced on the Internet on Monday, April 20, and the track features vulgar lyrics.

Accompanied by an R&B beat, Rihanna sings, "Baby you don't need to be scared of me / I guarantee that I'm not a mistake / I'mma give you all of my love / And I hope that you won't misplace it / You created this s--t / Going insane with all of this fear / Can't turn my back on it / I'm in love gotta' face it."

Brown's rapping is also highlighted in the track. The artist raps, "You're the only one I wanna stay on the phone with / Oh the late night Skype sex / On that young s--t / Girl you keep it one hunnit / Always gon' hold me down / You know you're the number one / Girl I'mma work you out."

In one verse, the two joined their voices together, singing, "Your property, treat me like I'm your property / Do what you wanna, take command / I'm about to be your biggest fan."

Listen to the song below.

Rihanna, 27, and Brown, 25, previously collaborated on songs such as 2012's "Birthday Cake" and "Nobody's Business," Entertainment Weekly wrote. However, Brown told MTV back in 2013 that he wants "Put It Up" to be different than their previous duets. The track also had the potential back then to be included in Brown's 2014 album "X."

"I wanted to do an R&B record with Rihanna because I didn't want it to be the same four-on-the-floor, pop," he explained to MTV. "At the end of the day, that's what they'd expect from us, so I wanted to do more of a record that nobody really heard her sing on as far as that genre."

The ex-lovers dated around 2009 but that relationship met its end when Brown was arrested after brutally assaulting the Barbadian singer, Entertainment Weekly noted. He pleaded guilty to the felony assault and "was given five years probation, which he completed in March," the news outlet added.

Us Weekly wrote that the beatings Rihanna suffered from Brown made the "American Oxygen" singer unable to perform at the Grammy Awards. The pair, however, patched things up in January 2013, with Rihanna explaining, "Even if it's a mistake, it's my mistake. After being tormented for so many years, being angry and dark, I'd rather just live my truth and take the backlash. I can handle it."

That same year, the two once again parted ways, Us Weekly noted.