Studies like this are a great read, redpills with scientific evidence. I am going to translate this shit into normal English. The study title is:
“Women's sexual interests across the ovulatory cycle depend on primary partner developmental instability”.
The uglier you are, the more your wife or girlfriend wants to fuck other men when she can get pregnant.
“Normally ovulating women have been found to report greater sexual attraction to men other than their own partners when near ovulation relative to the luteal phase”
Normal girlfriends and wives do not want to fuck their boyfriend or husband when they can get pregnant.
“In a sample of 54 couples, we found that women whose partners had high developmental instability (high fluctuating asymmetry) had greater attraction to men other than their partners, and less attraction to their own partners, when fertile.”
Out of 54 couples, girlfriends and wives who had ugly boyfriends or husband wanted to fuck someone else even more when they were ready to get pregnant.
“Women's sexual preferences and interests change across their ovulatory cycles.”
Vagina tingles depend on vagina tingles.
“females may sometimes benefit from a strategy in which they secure investment from a long-term mate and obtain genetic benefits from extra-pair partners.”
Betabux, alphafux.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1559901/