My understanding is that men cheat but rarely defect. Women cheat and more frequently defect. The reason being that other than novelty and cost of access, women are marginally indifferent in utility. Whereas other than novelty, men are marginally different in utility. Most of the time, people cheat for novelty, test of sexual market value, and retaliation.
Economics in everything.
Source date (UTC): 2018-04-25 18:41:00 UTC