Isabel is jealous when Leo goes after an assistant's job with successful -- and beautiful -- architect Julia Cordoza, a client of Alan's who could propel Leo to the career he's always wanted. Meanwhile, Karen goes shopping for a new set of wheels and ends up in a weird flirtation with car salesman Doug.

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.

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.