A woman's sex drive begins to plummet once she is in a secure relationship, according to research. Researchers from Germany found that four years into a relationship, less than half of 30-year-old women wanted regular sex.
Conversely, the team found a man's libido remained the same regardless of how long he had been in a relationship. Writing in the journal Human Nature, the scientists said the differences resulted from how humans had evolved.
For men, a good reason their sexual motivation to remain constant would be to guard against being cuckolded by another male Dr Dietrich Klusmann. The researchers from Hamburg-Eppendorf University interviewed 530 men and women about their relationships. They found 60% of 30-year-old women wanted sex "often" at the beginning of a relationship, but within four years of the relationship this figure fell to under 50%, and after 20 years it dropped to about 20%.
In contrast, they found the proportion of men wanting regular sex remained at between 60-80%, regardless of how long they had been in a relationship.
Tenderness
The study also revealed tenderness was important for women in a relationship. About 90% of women wanted tenderness, regardless of how long they had been in a relationship, but only 25% of men who had been in a relationship for 10 years said they were still seeking tenderness from their partner.
