Differences help Mayer, Perry stay together

Singer John Mayer says he is completely different from his girlfriend Katy Perry and this keeps their relationship strong.

The couple, who recently teamed up for a song "Who you love" for Mayer's album "Paradise Valley", got back together after a brief split.

"The fact that we're on such different sides of the coin actually keeps a lot of conflict at bay," Rolling Stones magazine quoted Mayer as saying.

"She's a whole different vibration of what's going on, and I'm totally supportive. I can say, 'Hey, how was work?' and really wonder how work was. It's a nice existence," he added.