Coupling (2000)

S3E5 The Freckle, The Key And The Couple Who Weren't

Steve is anxious about a spot on his rear end, which Susan remains oblivious to. Meanwhile, James suddenly recalls how he knows Susan. Jeff and Julia seek to add some excitement to their relationship, but things take a turn when he misplaces the key to the handcuffs. To complicate matters, Julia’s hefty ex-boyfriend shows up, forcing Jeff to feign that they aren’t together.