Apparently Charlie Sheen is not someone who lets go of a grudge easily.

Sheen was on Watch What Happens Live Wednesday night, and received a question from a viewer asking if he ever mended things with Rihanna after their Twitter feud three years ago.

His response? "Oh, that bitch."


The feud started after Rihanna allegedly refused to meet Sheen's then-fiancée Scottine Sheen (formerly known as Brett Rossi) at a restaurant three years ago.


In Rihanna's defense, perhaps she didn't want to say hi to Charlie Sheen and subsequently his fiancée because his first response to hearing a woman he doesn't get along with's name is "Oh, that bitch."

Just a thought.