Satisfaction - Season 3 Episode 3 Out of Tune
Overview: Bernie, an off-kilter fetish client of Heather's lands at 232 wanting to see her. Desperate to get rid of him, Nat makes a false promise to find him a replacement, but Bernie's not going to go away that easily. In the pursuit of normal couple dating, Sean takes Nat to the movies where she's like a fish out of water. While Sean thinks it's fun, Nat finds it excruciating. The concept of 'us' is not something that sits comfortably with her and she tells Sean she wants an open relationship.