Men lose interest in sex during long-term relationships before women, study finds. Men expect their appetite to stay at the same level and grow frustrated when it dips. They also feel pressure to always be ready for sex, and think they should always be the ones to initiate it.

See the source article by following the link below:
Men lose interest in sex during long-term relationships before women, study finds. Men expect their appetite to stay at the same level and grow frustrated when it dips. They also feel pressure to always be ready for sex, and think they should always be the ones to initiate it.