Sean Penn And Stacey Koplin Find Romance In Malibu

Earlier this summer Sean Penn, 50, and his new girlfriend, the mysterious Stacey Koplin, were seen out frollicking on the beach and riding jet skis to celebrate a laid-back summer on Malibu Beach.

Since the star's divorce from Robin Wright, 45, in 2010, Penn famously started seeing younger women and had a five-month stint with Scarlett Johansson, 26, erlier this year, following her own divorce from Ryan Reynolds. Penn and Koplin may be lying low, enjoying a lazy summer at Penn's Beverly Hills retreat, but they are still going strong. Late last month the couple was spotted dressing down and savoring a relaxed breakfast at Coogiie's Beach Cafe, according to UK"s Daily Mail. It seems like Koplin is a fan of the minidress, as she's been photographed twice with Penn wearing short, sporty numbers and flip-flops.

The couple has spent the rest of their summer hitting the beach for early morning workouts, with Penn keeping in top shape for his hyped role in the upcoming This Must Be the Place, in which he plays a rock star well past his prime who decides to hunt down an ex-Nazi. Penn has also been taking his new sweetheart shopping, as she was seen browsing with the best of them in Fred Segal with her beau waiting patiently nearby.