If a man is still relying on regular or routine chore sex for rapport long term, he is mentally & emotionally lazy, a poor quality partner.
You ramp up quickly with a partner by enthusiastic sex in the first month of a relationship, then slowly you have less and less sex as the communication and familiarity work their slow rapport magic between a couple. Woman love passionate sex, they don't like chore sex, their passionate fantasy is not a housekeeping regular chore. If they have sex with another, they are simply signalling that slow rapport is of very poor quality and still relying on fast rapport sex as if they don't know each other…women are practical not complicated, THEIR ACTIONS MAKE SENSE WHEN MENS ACTIONS DON'T MAKE MUCH SENSE. If emotional and communicative long term bonding is failing, women will seek out better relationship with fast rapport with another man or woman, its not philandery its them looking to fulfill their emotional needs for a partner that is growing in character not stunted in quick rapport sex that is getting more and more bizarre, while he cannot talk or emote to her in innovative, deep and fulfilling ways. Relationship is hard work, if you are mentally and emotionally lazy, you get cheated on or dumped.