Sam Worthington smitten by girlfriend

London: `Avatar` actor Sam Worthington is grateful to have met his model partner Lara Bingle.

The 31-year-old actor has been quiet about his relationship with Bingle, reported Daily Telegraph. "I`m very happy and I`ve met someone I`m very grateful for. She`s down to Earth," Worthington said. The couple are believed to have met in New York in late September after being introduced by a mutual friend. The actor had not made his relationship to the model public for a long time. However, the couple recently shared their picture on Instagram.