Mary, Mary

So far out of the past two books i have read by James Patterson there has been one common theme, revenge. In "The Big Bad Wolf" the revenge wasn't until the end when the actual Wolf killed all the men trying to turn him in. In "the Big Bad Wolf," there was also a husband who betrayed his wife. In "Mary, Mary" this also happens, is this because the author feels like he was betrayed in his past by his wife? Or maybe James Patterson feels that many relationships are derived from deceit and lies. This would explain the many twists and failed relationships.