Before Shanee Markovitz and Tani Kay get married this May, the couple gathered their close friends together recently to celebrate … their prenup. “I want my friends to see this as a huge part of our wedding. It’s as important as every other piece, if not more,” says Markovitz, 20. “We’re going to announce it at our wedding and put it in our programs, too.” While many prenuptial agreements are kept hush-hush and often seen as unromantic, for this couple — who have been together since they were high-school sophomores — it’s a sign of liberation. And not everyone is...