Hayden Christensen and Rachel Bilson
02/18/2009 at 12:00 PM EST
and her longtime beau, Hayden Christensen, got engaged quietly over the holidays, PEOPLE has learned.
According to a friend of the actress, the two, who costarred 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."
When contacted, Bilson's rep told PEOPLE, "I don't comment on my clients' personal lives."
A rep for Christensen had no comment.
The engagement news was first reported by the New York Post
's Page Six
Reporting by ALEXIS CHIU and LISA INGRASSIARELATED ARTICLES:
2007: See Rachel without a drop of makeup!
2002: Hayden is one of PEOPLE's' 'Most Beautiful'! RELATED GALLERY:
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