Just when you thought Rihanna and Chris Brown had FINALLY left their romance in the past, a previously unreleased duet makes its way online!

According to Digital Spy, the song - titled ‘Put It Up’ - is thought to have been intended for Breezy’s 'X' album, but failed to make the final tracklist.

[related]The sexy song sees the former couplesinging the lyrics,"I'm gonna explore all of your body" and, "Treat me like I'm your property, do what you wanna/ Take command, I'm about to be your biggest fan".

Following his 2009 assault on RiRi and splitin 2010, the couple briefly reunited a few years later -with the paireven attending the 'Grammy Awards' together in 2013.

They have also worked together before on a remix of Rihanna’s 'Talk That Talk ''Birthday Cake’, and also collaborating on 'Unapologetic''s 'Nobody's Business'.