Sagittarius (Nov. 22-Dec. 21): Happiest Season Capricorn's birthdays fall during the holiday season, so they should have some festive times in the bedroom. Take inspiration from The Happiest Season, when Abby and Harper spend Christmas at Harper's home, then secretly get it on in the bedroom while the family is upstairs. If you've ever had sex while trying not to get caught, you know how arousing it can be! Image Source: Hulu via Giphy