Recent metanalysis suggest that the long-term ideal mate preferences have small predictive validity for indicators of marital satisfaction and the characteristics of the mate that will be end up selecting. This problem has been examined from different theoretical and methodological strategies; however, the classical research has failed to capture the emotional nature of the mate selection process that could involve the preference measurement system (i.e., autoreport), which could affect the predictions. The currently work aims to assess whether emotional states can alter the overall long-term mate preference evaluation, in order to provide elements in the discussion of the predictive power of preferences. Initially, 2 instrument validation processes were implemented, considering that the tools had not been previously adapted for use in the Colombian population. Two experiments were developed with a factorial design 2 (Sex) x 3 (Affective Group). In study 1, 185 university students (45,4% men and 54,6% women) were primed with stimuli related to Love and Sadness, in addition, preference measurements were applied with the IPRS test. In study 2, a new sample of 220 participants (41,4% men and 58,6% women) was primed with Sexual Desire and Terror, additionally a reduced version of the IPRS test was applied. In both studies, sexual differences were found in preference patterns, as has been reported in other research around the world. However, the effect of emotional states on preferences was minimal, compared to other studies examining this phenomenon, which leads to suggest that long-term mate preferences could be resistant to the emotional changes of the evaluators, therefore, it is necessary to continue studying other factors that may affect the predictive validity of preferences.