After several dreamy days in Italy, where the two meet while on solo vacations, they return to their separate lives in Los Angeles. But Leo can't resist calling Isabel, even though she decides to accept a marriage proposal from her longtime boyfriend. The bond they formed overseas haunts her, too, and Leo is nothing if not persistent: ""When love does come around,"" he tells her, ""you can't take it lightly.""

Leo insists that Isabel tell Everett that the wedding is off. She does-but she can't refuse when he asks her to attend nuptials at which his family had expected to meet her. Meanwhile, Leo's sister Rhonda has a breakup of her own to deal with.

Leo and Isabel hope that first impressions aren't lasting, when, through a comedy of errors, they unexpectedly meet each other's families. But it's not very amusing when he and Everett come face to face at Isabel's house.

Leo and Isabel throw a New Year's Eve bash for their friends. But the limited guest list doesn't preclude some party crashers from showing up-including Everett, Isabel's ex-fiancé.

Will Karen and Doug's cheatin' hearts tell on them, or will Leo. Meanwhile, Isabel ain't misbehavin' but feels guilty anyway when she runs into Everett while jogging; and Jennifer receives an ominous letter from one of her professors.

When Leo has to work on Valentine's Day, Isabel goes to a concert with Everett. Meanwhile, Alan returns home from a business trip and notices that his wife is ""glowing.""

Leo faces some tough realities as he deals with his grandfather's recent heart attack and the departure of Isabel, who's found an apartment of her own.