The actor proposed to actress Lily Anne Harrison during a recent trip to Mazatlan, Mexico, where the couple was joined by his three daughters from his marriage to Jennie Garth, and her parents.
"A Magical night with this incredible woman. A Perfect ending to 2019," Peter captioned a slideshow of photos from the winter break.
Harrison also shared a picture from her New Year's Eve in Mexico, captioning the snap: "Bye 2019 thanks for kicking my butt, making me stronger than ever, protecting my family and hurtling me toward my dreams also, not a bad way to ring in the new year with my sweetheart."
Facinelli and Harrison began dating in 2016, after he and Jaimie Alexander ended their engagement.