It looks like things between Katy Perry and John Mayer are getting hotter each week. The two were caught flirting again, this time at a friend's pool party in the Hollywood Hills.
Katy hung out in a two-piece bikini while John was seen wrapping his arms around her. The couple were also snapped together in the pool, where they also flirted.
Sources claim that John kept looking down Katy's bikini top as they made out.
One source told Star magazine: 'There was major chemistry between them. It was like they were on a honeymoon. John and Katy were all over each other. They were holding hands and kissing the entire time. Even in the pool, they stuck together non-stop."
After spending a few hours at the pool party, John and Katy left together.