Mark Zuckerberg, CEO of Facebook, married his college sweetheart, pediatrician Priscilla Chan, in 2012. There is no confirmation that they signed a prenup, but according to the Wall Street Journal, the billionaire couple have a relationship agreement. Instead of negotiating their surplus of money, this contract grants Chan one date per week, along with a minimum of 100 minutes of alone time—all taking place outside their apartment and Zuckerberg’s office. While an agreement like this wouldn’t be held up in court, it is heartwarming for a couple with endless riches to promise to always spend time together.