Robert Pattinson is taking rumored girlfriend Dylan Penn on a romantic trip to Hawaii.

The 27-year-old actor is said to have moved on after a four-year on/off romance with his Twilight co-star Kristen Stewart and is taking blonde beauty Dylan - who is actor Sean Penn's daughter - on a three-day luxury vacation next month.

"Rob wants to treat her to a break away. They have been seeing each other casually for months," a source said.

He is still said to be in touch with former love Kristen, 23, and was even reported to have been asking her for career advice recently. Kristen is said to be unhappy that the actor is taking Dylan on the getaway. "Kristen is really upset that Rob has planned a romantic break with another woman. Rob still loves Kristen but he doesn't think it can work between them, he believes they both need a fresh start. He wants to jeep his options open, and he's looking forward to spending time with Dylan and getting to know her better in Hawaii," the source added.