Mario Lopez and Courtney Mazza
The X Factor host popped the question over New Year's weekend in Ixtapa, Mexico, with a 5-carat diamond ring worth an estimated $80,000. He and his longtime love, with whom he has a 2-year-old daughter, Gia, tied the knot in a Dec. 1 beach wedding -- but the couple's bond was official long before that. "The only thing that's going to change is my last name," the bride told Us. "Same love, same everything!"