So sad! Katy Perry and Rihanna were bff’s for years- always choosing to sit next to each other at award shows and always hanging out and partying together. But now it looks like these two are completely done being friends. A few months ago we saw some beginning signs of tension between Rih and Katy all because of Rih getting back with Chris Brown. Now it seems official, because Katy requested to sit far away from Rih at the Grammy’s. Click below for more details.