Logo text Just over a month after Love Story: John F. Kennedy Jr. & Carolyn Bessette aired its finale, the cast and creatives are opening up about the decisions behind that heartbreaking ending . On Wednesday night, stars of the hit FX series — which chronicles the tragic romance between America’s Prince and the former Calvin Klein publicist in the 1990s — including Sarah Pidgeon (Carolyn Bessette), Paul Anthony Kelly (John F. Kennedy Jr.), Naomi Watts (Jackie Kennedy Onassis), Grace Gummer (Caroline Kennedy), Constance Zimmer (Ann Marie Messina), Alessandro Nivola (Calvin Klein), showrunner Connor Hines and executive producer Brad Simpson gathered at Metrograph for a screening and live conversation. During the event, they revisited clips from throughout the season and reflected on the making of the series.…