Married at First Sight 'Married at First Sight' expert Dr. Pepper Schwartz: I don't think Luke Cuccurullo is an honest guy 02/21/2019 Married at First Sight expert Dr. Pepper Schwartz apparently isn't a fan of Luke Cuccurullo's behavior in his marriage to Kate Sisk. Read More RELATED NEWS 'Married at First Sight' star David addresses Michelle's reaction to him living at home'Married at First Sight' recap: Michelle breaks down, Allen isn't Madison's type, and Thomas reveals cheating past'Married at First Sight' Couples Now: Who's still together? Who has divorced and re-married? Where are they now? (PHOTOS) TAGS: Luke Cuccurullo Keith Dewar Will Guess Kristine Killingsworth Jasmine McGriff Jamie Otis Stephanie Sersen Kate Sisk AJ Vollmoeller