The first trailer for Hulu’s “Wedding Season” ensures that audiences will think twice before saying “I do.” From the producers of “Broad City,” “Difficult People,” “Younger” and “Search Party,” this action-packed romantic comedy revolves around Katie and Stefan, who fall for one another at a wedding and begin an affair despite the pesky little reality that Katie is engaged. Two months later at Katie’s wedding, her new husband and his entire family are murdered.