In both sexes, hormone levels play an important role by increasing the sensitivity towards the sexual signals emitted by the potential partners & determining the expression of sexual signals that allows the potential partner or intra-sexual competitor to identify the reproductive status

Sexual Incentive and Choice. Armando Ferreira-Nuño et al. Current Sexual Health Reports, https://link.springer.com/article/10.1007%2Fs11930-018-0158-1

Abstract
Purpose of the Review: In the present manuscript, we review the most important sexual cues in rodents and mammals that influence mate choice. Sexual cues lead to the approach and selection of a partner.

Recent Findings: In both sexes, hormone levels play an important role by increasing the sensitivity towards the sexual signals emitted by the potential partners and determining the expression of sexual signals that allows the potential partner or intra-sexual competitor to identify the reproductive status. Similarly, sexual cues emitted by both sexes can modify the hormonal status of the potential partner or intra-sexual competitors, so that they can be better skilled reproductively for sexual competition.

Summary: Future research should analyze the impact of the use of hormonal contraceptives, since it has been shown that they alter the sexual signals emitted and could influence the selection of partners in humans. In addition, this review will be important for anyone using a rodent model to understand sexual motivation.