A woman's cycle is controlled by her body hormones which also controls her libido or sexual desire so her libido changes up and down through the month according to her cycle or hormonal level. About the best time to have a date in , it differs from a female to female but most of females have the highest sexual desire in ovulation days when her body is preparing itself for hosting a new baby. Ovulation days can be calculated easily and most often it is 11-16 days after the first day in her last period. Birth control pills re-manage female hormones by many ways to prevent pregnancy through canceling ovulation so it also damages this libido peak for most of females.