In "De-Lovely," the new film about songwriter Cole Porter’s life, Porter tells his wife, Linda, about his homosexuality. Linda, who is the inspiration behind his genius, tells him that his music comes from his talent not from his destructive behavior. But she does beg Porter to give up his scandalous behavior so as “not to put us at jeopardy,” a promise Porter isn’t prepared to make. The prospect of a marriage where children, permanence, and fidelity are in doubt is supposed to make us pity Linda Porter, even if she was complicit in her own plight. After all, who would...