Jason Biggs Is Engaged

Wednesday January 30, 2008 02:55 PM EST

Jenny Mollen and Jason Biggs

Lester Cohen/WireImage

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American Pie star Jason Biggs is engaged to his girlfriend, actress Jenny Mollen, a rep for the actor confirms to PEOPLE.

The couple looked cozy at the premiere of 29-year-old Biggs's new comedy Over Her Dead Body Tuesday night, and Mollen, 28, was sporting a impressive ring.

The pair met on the 2007 set of My Best Friend's Girl, which is set for release this fall.