[s1e8] Three's A Crowd -

If you're looking for a more modern take or a detailed breakdown of these themes, you can check out features from these outlets:

: Samantha has an affair with a married man, but the situation takes a turn when his wife catches them and, surprisingly, wants to join in. [S1E8] Three's a Crowd

: Carrie's anxiety peaks when she discovers Mr. Big was previously married. After meeting his "perfect" ex-wife, Barbara, Carrie becomes obsessed with whether she can compete with his past and whether Big is capable of another serious commitment. If you're looking for a more modern take