Interpersonal attraction: from first impressions to close relationships. Similarity similarity is the match between our interests, background, attitudes, and values and those of other person the concept of complimentary refers to people who are our opposites. More likely to feel understood by those similar to us. The effects of physical attractiveness on liking physical attractiveness of dates was strongest predictor for liking your partner. The power of familiarity people prefer faces that most resemble their own all attractions may be expressions of our underlying preference for familiar and safe over unfamiliar and potentially dangerous. We are attracted to what is beautiful, which can lead to unfair treatment. Women will looks for a man who can supply the resources and support she needs to bear a child. Men will look for a woman who appears capable of reproducing successfully: will respond to physical appearance of women, since this can denote her reproductive fitness.