“Jumper” co-stars Rachel Bilson and Hayden Christensen engaged

rachel-bilson-hayden-christensen-engaged

Rachel Bilson and her longtime boyfriend, Hayden Christensen, are engaged!

Bilson was overheard telling a passenger on a Virgin America flight that she is planning to get married, the New York Post’s Page Six reports.

“A man sitting in front of her on the plane saw a ring on her finger and asked if she was married,” revealed an unnamed source.

The former “OC” actress reportedly replied: “I’m not married yet, just engaged. I know I look like I’m 15, but I’m actually 27.”

A friend of the actress told PEOPLE that the two, who co-starred in 2008’s “Jumper“, got engaged in December.

“They’re so excited,” says the pal, adding that no wedding date has been set. “They’re a great couple. Rachel seems thrilled beyond belief.”

Representatives for Bilson and Christensen have not commented.