Mr. Harris returns just as Christine starts falling in love with Max.

Christine mistakes a good looking cop for a stripper, who alerts her that there is a prowler in the neighborhood. In order to feel more secure, Christine asks Matthew to stay over. Meanwhile, New Christine goes into labor, with the sole goal of avoiding having the baby arrive on Old Christine's birthday.

Christine finds herself forced to feign happiness when she covets the house Richard and New Christine have purchased.

When Christine learns that her close friends, Barb and Pete, are responsible for introducing Richard to his "new" Christine, she allows them to set her up on a blind date of her own. After a series of unsuccessful dates, she finds the possibility of love in the strangest of places. Meanwhile, Matthew takes Ritchie to swimming lessons.

Richard learns from a gloating Matthew that Christine is out enjoying her fifth date with a new beau, Burton, so he does what any self-respecting ex-husband would do: he sabotages the happy couple's goodnight kiss and insults Burton with lawyer jokes. But when he tries to make it up to them by inviting Christine and Burton to dinner with him and "new" Christine, his best-laid plans go awry.

After 10 dates, Christine faces a critical moment in her relationship with Burton. Will she or won't she? Let him in the house, that is, to meet her son, Ritchie. She eventually relents, only to be thrown for a loop later.

Concerned about the uniformity of Ritchie's schoolmates, Christine takes it upon herself to help diversify the student body at his private school.

Christine volunteers to help out at Ritchie's spring carnival and while there, she runs into the mean moms -- Marly and Lindsay -- who are clucking over the attractive father of a new student at Westbridge. Christine is excited to learn that the hot dad is her ex-boyfriend, Burton, but her hopes of re-igniting their romance are shot down when she learns Burton has a new girlfriend.

Since "New" Christine broke up with Richard, he's been spending a lot of time at her house, leading Ritchie to believe that his parents are back together. When Christine tells Richard that Ritchie told this to his new teacher, Mr. Harris, Richard suggests that they give their relationship another try.

Richard tells Christine that the reason he has good luck with women is that he "says yes to life." When Christine meets a good-looking man after paying a surprise visit to New Christine, she decides to break out of her mold and says yes when he asks her out to dinner.

Christine is stunned to find out the man she's seeing, New Christine's father, is also a grandfather.

Christine's attraction to Ritchie's teacher causes a scene at a school fund-raiser--especially after she wins a playdate with the man.

The stresses of going to a wedding with Richard and Barb are multiplied by Christine's agreeing to be designated driver, depriving her of some much-needed alcohol.

Christine hopes acting a bit more wild will stop Barb thinking she's uncool.

Old Christine finds a suspicious mole on her left breast, and overreacts, thinking shes dying. Meanwhile, Richard tries to negotiate with New Christine regarding their house.

Barb, afraid that a marriage proposal is iminent, asks Christine to run interference on her next date with Dave; Richard realizes he must try to woo New Christine if he wants her back.

Christine tells her therapist, Max, that she is in love with him, but his reaction is not quite what she is expecting.

When Christine is told that her five-year car lease is up, she realizes that her life hasn't evolved during that time the way she'd hoped and decides to make some major life changes, with a little help from her boyfriend, Max. Meanwhile, Matthew seeks a roommate to replace Richard.

After the mothers at Ritchie's private school continue to take cheap shots at Christine, Christine decides to enroll him in public school.

Over a Thanksgiving visit, the discovery of a shared secret gives Christine a way to negate one of her mother's criticisms.

Christine learns a juicy neighborhood secret when reluctantly attending the Christmas block party.

Richard begs Christine for the return of her old wedding ring which was an heirloom from his mother, in hopes of giving it to new Christine when he proposes.

The parent company of Christine and Barb's gym franchise comes for an inspection and discovers that they have broken a contractual clause, risking the entire business. New Christine wants Richard to get a vasectomy.

Christine finds out a secret about Jeff after they rekindle feelings for each other at Richard and New Christine's wedding. Matthew continues to date Amy, and Barb meets a possible love interest.

Christine and Barb prepare for a casual, non-relationship-seeking double date with two guys they meet at a video store, but jealousy arises when only one of them gets asked out for a second date.