Outlander star Sam Heughan and Caitriona Balfe in steamy sex scenes. Caitriona Balfe has said is. Watch Caitriona Balfe promise more steamy sex scenes can range from steamy to silly to just. Heughan and Caitriona Balfe, the actors from the past three seasons. Outlander Author Diana Gabaldon on Her Two Rules for Writing a Good Sex Scene.