According to a study of the attitudes of 751 college students published in the
Journal of Social and Personal Relationships
, women viewed other early-twenties women with more than 20 sexual partners as unsuitable for friendship. The same standard did not apply to men with the same number of partners, who were seen as having accomplished something positive. The results also suggested that men viewed these "slutty" women as unsuitable for long-term romantic partnerships.
Image: Via Bullett.