According to a series of studies, men in relationships often underestimate how often and when their girlfriends or wives want to have sex.
The researchers at University of Toronto and the University of Western Ontario studied a total of 229 couples who reported having sex an average of one to two times a week, with an average relationship of six years.
The couples documented their general sexual desire, perception of their partner’s sexual desire, and their satisfaction with their relationship via journal over the course of three weeks, or went into the lab and reported those same factors in person.