Chemistry

After a hot-and-heavy session of making love, Liz and Michael get into a heated debate about what constitutes a perfect kiss, and she calls on a third party to help settle the argument.

Michael's birthday leads to an unexpected meeting between Liz and Jocelyn; Michael's father throws him a wild yacht party featuring sexy contortionists and more; Luther reveals to Michael that he made a sex video with Jocelyn's married sister.

Michael brings the ever-intuitive Liz on a business trip to Santa Barbara where he negotiates a deal between a tough businesswoman and a newspaper magnate. Meanwhile, Luther's affair with Pemmie takes a turn when he buys her an intriguing gift.

Jocelyn undergoes a highly liberating experience (she gets a dragon tattoo) that changes her relationship with Michael. Meanwhile, Liz has a crisis on the job and must rely on Michael to help her through it.

Michael's healthy sex drive and use of a profanity prompt Jocelyn's suspicions that he's having an affair. But while his sex with Jocelyn has become incredible, it leads to performance problems when he's with Liz. Luckily, Luther may have just the cure for Michael's issues.

A nude Liz paints the sleeping Michael, which leads to a paint fight and sex. In the meantime, Michael helps Jocelyn rewrite a speech she’s giving at a trade conference.

Michael accepts an invitation to attend a weekend retreat of Liz’s police unit, but problems arise when he learns it is being held at a mountain cabin owned by her ex-lover.

A defining moment in Liz and Michael’s relationship leads to a momentous decision. Later, Michael receives a surprise visit from Jocelyn, and Liz agrees to drinks with Judd.

Far-too-busy Michael and Liz try to squeeze in some quality romance time; Luther mixes business with pleasure when Pemmie interrupts his meeting with a comely client.

Michael quits the firm; Jocelyn opens up to Michael; Michael's fears complicate his relationship with Liz.

A promotion at work comes with a life-altering decision for Liz, who must also deal with the return of an old boyfriend. Meanwhile, Jocelyn wants Michael to try something different.

Liz reconsiders her big promotion; Luther and Pemmie take a novel approach to the idea of a threesome; Abigail gets news that knocks her for a loop; and a tragedy puts things in perspective for Liz and Michael.