They moved in together a week later, "and we have not spent a night apart since," Mr. Mutchnick said, adding he had never met a man as intelligent and confident, or one who could withstand his insecurities and histrionics. "Erik can stand up to Max," said Janet Eisenberg, a close friend of Mr. Mutchnick’s who was the inspiration for the character Grace. "He’s a grown-up with his own career and his own point of view." "People say ‘What’s the rush?’ But why the delay?" said Mr. Hyman, who had learned firsthand that time can be fleeting. "When you want to be with someone and you can be, I don’t see why you would be apart." Within three months they were talking about having children, and 20 months later, in September, a surrogate gave birth to their daughters, Rose and Evan.