House Costars Engaged

By Julie Jordan

Friday January 05, 2007 09:15 PM EST

Morrison and Spencer

Kevin Parry/WireImage

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Actress Jennifer Morrison and actor Jesse Spencer, who costar on FOX's hit medical drama House, became engaged over the holidays in Paris, PEOPLE has learned.

Morrison, 27, who plays Dr. Allison Cameron, and Spencer, also 27, who portays Dr. Robert Chase, met while filming the pilot for the series, which debuted in 2004.

A rep for the couple says no wedding date has been set.