One complication for this theory is that fertility affects sexual behavior; women are more likely to have sex during their most fertile time of the month (https

One complication for this theory is that fertility affects sexual behavior; women are more likely to have sex during their most fertile time of the month (https://www.webmd.com/sex-relationships/news/20040609/sex-heats-up-around-womens-ovulation-date https://www.webmd.com/sex-relationships/news/20040609/sex-he...). A breeding urge explains this phenomenon, a mating urge doesn't.