Episode 68 of "Ally McBeal"
s04e01 Sex, Lies & Second Thoughts

Brian asks Ally to move in with him, but she questions the entire relationship mostly because their sex life is lackluster. She turns to Renee and a new therapist, who has oddly taken over Tracy's office, for advice. The therapist is weirdly understanding of her problems. She eventually decides to break up with Brian. Then she learns the new therapist isn't really a therapist at all, but a lawyer. Sparks fly between them nonetheless. At the firm, Cage and Fish represent a woman who wants her six-year-marriage annulled because she suspects her husband married her for her money. The woman, who is unattractive, says she and her husband were always great friends and she believed he just had no interest in sex. However, after she catches him cheating on her with a model, she changes her mind about him.