03/15/2009 05:12 am ET Updated Nov 17, 2011

5 Scientific Facts About Women Every Man Should Know

While there is no playbook for how to snag and keep a good woman, science has accumulated some helpful tips toward a successful romantic life designed to last well beyond Valentine's Day.

1. Offer money, love and dependability

Gals want looks and smarts. While you men can't control those two characteristics much, take heart: Money and character are also important to women. A study in December of more than 1,000 undergraduate students revealed women's top mate characteristics were mutual attraction and love, dependable character, and emotional stability.

Quality time counts, too.

A survey of more than 5,000 U.S. couples published in the journal Social Forces in 2006 suggested women are happiest in their marriages when men show a high level of emotional engagement: expressing positive emotions; being attentive to their wives' needs; and setting aside time for activities focused specifically on the relationship.

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