Actor Gerard Butler, who is dating a mysterious woman, was photographed while staring at her bikini-clad derriere at a beach in Malibu.

The pair was seen enjoying paddle boarding in the ocean Thursday, reports dailymail.co.uk.

The `300` actor and his lady friend made their way down to the shore in a golf buggy. And Butler was caught sneak peeking at the buttocks when his female friend hoisted herself up to reach something atop the buggy.

The 44-year-old `Olympus Has Fallen` actor, who showed off his semi-toned body, was later seen kissing her.