Coupling - Season 1 Episode 4 Inferno

Steve is plunged into total panic when he suspects that Susan has found one of his porn videos. To fill the embarrassing silence, he tells her he loves her, but Susan is well-aware that he was merely panicking. Susan invites all the friends over for a dinner party. Jane brings her therapist, Jill, who everyone assumes is there as Jane's date. In front of everyone, Susan insists that Steve justify his passion for the offending porn film, Lesbian Spank Inferno.