While fans are anxiously awaiting the release of her eighth studio album, "R8," Rihanna's unheard track with ex-boyfriend Chris Brown, titled "Put It Up," leaked online this weekend.

RiRi kicks off the nearly five-minute song.

"Baby ain't no need to be scared of me / I guarantee that I'm not a mistake," she sings over the snapping instrumental. "I'mma give it all of my love and I hope that you won't misplace it."

Breezy soon responds to his then-lover, "I'mma write my name with my tongue on your back baby," giving her perimission to "treat me like I'm your property."

However, this does not mean that the two are now back together. The sensual duet was previously recorded in 2013 when they briefly rekindled their relationship following Brown's infamous assault back in 2009.

Around the same time, the duo also collaborated on a remix version of Rihanna's "Talk That Talk" (2011) track "Birthday Cake," as well as "Nobody's Business" off her 2012 record "Unapologetic."

In an interview with MTV News in April 2013, the "New Flame" crooner discussed working with his on-again, off-again girlfriend on the intimate cut.

"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 said, emphasizing that he wanted to create something fans had never heard or expected from them.

Weeks after teasing their latest project together, the Barbadian singer and the R&B star broke up for good. Although "Put It Up" was intended to be featured as "Carpe Diem" on Brown's 2014 album, "X," it never made the final cut.

Check out Rihanna's "Put It Up" with Chris Brown below.