On Christmas Eve, twice-married reality-TV Romeo Hugh Hefner proposed to 24-year-old Crystal Harris, December 2009 Playmate of the Month and Hef's #1 girlfriend on the reality hit The Girls Next Door after the departure of Holly Madison.

"When I gave Crystal the ring, she burst into tears. This is the happiest Christmas weekend in memory," Hef tweeted after popping the question and presenting her with a massive diamond, which Crystal quickly photographed and posted on the Internet.

Former Girls Next Door castmates and Hef girlfriends Kendra Wilkinson and Bridget Marquardt congratulated the newly betrothed couple, but there has been no public statement yet from Karissa and Kristina Shannon, the pugnacious 21-twins with which Crystal currently shares Hef.

There's also no word on what role the Shannon twins will play in the marriage (or on the wedding night) or whether all three babes will be making a Kendra Wilkinson-style lesbian sex tape. But that’s probably in the cards, too.

Congrats, Hef and Crystal! Third time's a charm!