They're at it again ... Rihanna and Chris Brown have collaborated on a new song, tellingly titled "Nobodies Business."

With lyrics like "Your love is perfection, please point me in the right direction," the two gloss right over their violent history together on the very Michael Jackson-sounding song.

In the snippet released online, Rihanna does most of the singing ... not surprising since the song is a cut from her upcoming album "Unapologetic." Anyone sensing a theme here?

"Every touch becomes infectious, let's make out in this Lexus," she sings on the track. "There's no other love just like this ... I'ma be your girl, I wanna make you mine and it ain't nobody's business."

This is the third time the two have worked together on a song after Brown's 2009 assault on Rihanna. They previously collaborated on remixes of their songs "Birthday Cake" and "Turn Up the Music."

While they're not officially commenting on the status of their relationship, it's clear they're still very close ... and have been seen hanging out together since Chris split with girlfriend Karrueche Tran.

Sure, the song is catchy ... but is it overshadowed by their volatile past? Sound off below.

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