A new track by Chris Brown has apparently caused another rift between the singer and ex-girlfriend Rihanna.

Brown released an unofficial remix of Kanye West's "Way Too Cool" Thursday morning, and some lyrics in the song concerning a former lover seemed to rub Rihanna the wrong way.

On the track, Brown raps, "Don't f*** with my old b**ch it's like a bad fur/Every industry n**** done had her/Shook the tree like a pumpkin just to smash her/B**ch is breaking codes, but I'm the password."  

Rihanna promptly unfollowed Brown on Twitter upon hearing the lyrics, after which Brown downplayed talk that they were about her, writing, "Assumptions! I didn't say any names so if u took offense to it then it's something you feel guilty about."

Brown was convicted of assaulting Rihanna in 2009, but the two have since gotten together on several projects.