Ring a Ding Ding

Aidan moves out and leaves Carrie the option of either buying back her apartment for what he paid for it or selling it off but she doesn't have enough money for a loan so she goes to see Mr. Big who writes her a check but she finally decides that she wants to do it on her own so she tears up the check. Charlotte ends up giving her her wedding ring so that Carrie can use it as collateral to get her loan.
Samantha discovers that Richard isn't the one that's shopping for all the presents that he buys her and that he isn't even signing the cards but his assistant is the one who does it so she gets his assistant to sign the most recent card "Love Richard" to trick him into saying I love you. Miranda and Steve discuss custody of their soon to be child.