Yahoo Lifestyle - Dave Grohl's secret love child reveals wider issue for men like him: 'Ego boost'
“Relationship and intimacy coach Susie Kim told Yahoo Lifestyle that people cheat for a variety of reasons. "It can be from a need for validation, variety, or simply part of a person's values. Sometimes, people are drawn to cheat because it provides an outlet for them, where they get to be seen in a particular way, or they get to express themselves in a particular way that isn't available in their committed relationship," she said.”