Contraceptive pill simulates pregnancy at hormonal levels. That includes partner selection and preferences. Imagine your partner is on a pill while you date, you get married and try for kids. She stops pill and there is a huge change in her chemistry .
It also stops ovulation. It plays a huge role in female sexuality, to the point some people have trouble to orgasm.
It also stops ovulation. It plays a huge role in female sexuality, to the point some people have trouble to orgasm.