Hollywood beauty Maria Bello insists she will one of the last celebrities to settle down and marry - because she thinks its impossible to be faithful to one partner for life. The A History of Violence actress, 39, has never wed, but has a five-year-old son JACKSON BLUE with TV executive DAN MCDERMOTT. She tells Esquire magazine, "The whole idea of monogamy is nonsensical to me. "I suppose I understand the idea of a lifelong helpmate and friend. But when you have to stay sexually monogamous to this one person, I think it's usually a big fat lie. "Read the statistics. Seventy per cent of people are having affairs."