Who: Heiress, reality star, businesswoman, DJ, and singer Paris Hilton, 40, and Good Charlotte musician Benji Madden, 42.

How They Met: To say they ran in the same circles would be putting it lightly. Hilton's Simple Life frenemy Nicole Richie is Madden's sister-in-law — Richie and Benji's twin brother and bandmate Joel welcomed daughter Harlow together in 2008 and wed in 2010.