‘Selling Sunset’ star Mary Fitzgerald opens up about her relationship journey with husband Romain Bonnet, as seen on season 3 of the Netflix hit. The couple deals with trust issues in the wake of the wedding, plus the pressures of settling down, from buying a house to figuring out if they want to have kids — and how. Mary also reveals she did upgrade her engagement ring from the much-teased-about moissanite stone to a diamond. All three seasons of ‘Selling Sunset’ are now streaming.