Kate Greer may not officially belong on the list as the couple aren’t married, but they may as well be!

Kate and Jack Dorsey (the founder of Square Inc. and Twitter) have been dating for years, even though they have had a rocky relationship at times. They haven’t had any children (yet) as Jack has spoken publicly of how his companies are his babies to him. Kate is able to live a life of her own as she works with Campinteractive, an organization that helps children learn technological skills.