The new trailer teases more steamy sex scenes and his co-star and friend Catriona Balfe. Fans are expecting a hot and steamy sex scene for the time travel adventure TV series Outlander. The best Outlander sex scenes with Caitriona Balfe. Outlander's Caitriona Balfe: Sex scenes are actually pretty dang awkward to film. One of which is how the steamy scenes between their characters are shot.