According to Star Magazine, Adam Levine hates Chris Brown and he doesn't care if people know how he feels. Adam is apparently still upset over how Chris treated Rihanna.
A source said: "Adam hates Chris Brown. And he has no problem telling people that. During an episode of 'The Voice', Adam flat-out told the guy he would have chosen him if he hadn't sung a Chris Brown song. He said some people might be over what Chris did, but he isn't and never will be.