The evolutionist theory presented by Buss 1996 states that there are different mechanisms in the offer and search of attributes when selecting a potential sexual partner. Based on this theory and the research that supports it, the objective of this research is to confirm these predictions in Colombian population and long-term relationships. For this, an analysis of categories such as age, physical attractiveness and resources found in advertisements of the page www.colombiancupid.com was carried out. We analyzed 1405 advertisements of which 548 belonged to men and 857 to heterosexual women. The ads were chosen according to the following parameters: the advertisement had to have the age of the advertiser and the desired couple, besides it had to have a description of them, they had to have in the type of relation sought only in marriage. From the analysis of results it is evident that in general women seek men older than themselves and men seek younger women; Although in some age ranges women are looking for younger couples and older couples. In the analysis of physical attractiveness women offer and seek this trait more frequently, as in the resource variable. In conclusion, there is fulfillment of evolutionary predictions in the age both offered and sought by men and women and in the greater offer of physical attractiveness and greater search of resources in women.
