A member of Rihanna's fan base tweeted the Bajan star saying "@Rihanna You look so happy without @ChrisBrown. I hope you never go back, he is toxic to you."
Brown was quick to react to the Tweet, but not in a way you'd expect. He added the Tweet to his favourites.
Rihanna and Chris Brown have a messy history together, with Brown being charged with felony assault and making criminal threats after beating the 25-year-old star.
RITA ORA AND CARA DELEVINGNE PLANNING TOPSHOP FASHION LINE?
5 REASONS WHY TAYLOR SWIFT'S NEW ALBUM IS GOING TO BE THE BEST ALBUM EVER MADE
WOULD MIRANDA HART MAKE THE BEST FEMALE DOCTOR WHO?