Arnold Schwarzenegger has reunited with his secret son for a dinner date.

The movie star took his teenage son Joseph, who he fathered with his family's former housekeeper Mildred Baena, out for a meal at fancy Trattoria Amici in Beverly Hills on 7 February (13), In Touch magazine has learned.

A fellow diner tells the publication, "They look identical... and they definitely didn't seem estranged. They were talking and having a great time together."

Schwarzenegger came clean about his affair with Baena, now 51, in 2011. The confession led to the end of his marriage to Maria Shriver.