The girls wrestle with the question how and if partners can/want to change for each-other. For Miranda this means fitting her busy schedule to lover Steves late hours as barman and cuddling appetite when she wants to start the working day. Carrie wants to stop Big ogling other women and other 'little' things. When Charlotte decides her uncircumcised lover, restaurant critic Mike, looks like a sharpei below the belt, he decides to everyones surprise to get cut, but the psychological side-effect of his 'second virginity' makes her regret his move. Samantha is happy being the flexible one, but it rattles even her to meet a former lover who had a sex operation and renamed himself after her.

Carrie finds out the Guy she IS dating IS bisexual, and because of him, she explores the bisexual community for the first time.