Luke Thompson returns as the second-oldest Bridgerton son, Benedict, while Yerin Ha joins the cast as the downtrodden Sophie Baek. “We’d only started to get to know each other, but it felt like we’d worked together for a much longer time,” Thompson told InStyle. Are Luke Thompson and Yerin Ha dating? No, Luke Thompson and Yerin Ha are not dating outside of their Bridgerton roles. Thompson told Country and Townhouse that he’s pretty much not on social media for his own well-being.