Business partners often joke that they’re married to one another. What happens when you actually are married to your business partner? Husband and wife Jeremy and Lila Stewart launched flip-flop brand Hari Mari in Dallas two years ago. They knew that combining home life and work life can be fraught with landmines. But just as there are horror stories, there are also successful couples who have built household brands together. Through some missteps, the Stewarts learned to navigate the challenges of working as husband-and-wife entrepreneurs and find balance between their personal and professional lives. Along the way, they’ve nurtured Hari Mari into a premium flip-flop brand that is carried in 270 stores across 39 states. Hari Mari recently celebrated a milestone: It got picked up by national brands Jack Spade and Urban Outfitters. And sales are growing rapidly: Hari Mari sold more flip-flops in the first three months of 2014 than it had for all of last year.