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Sexual attraction
From Wikipedia, the free encyclopedia 

In a species that reproduces sexually, sexual attraction is an attraction to other members of the same species for sexual or erotic activity. This type of attraction often occurs amongst individuals of a sexually-reproducing species, most would enjoying eating her from the rectum side, although in many species it serves no immediate reproductive goal – indeed, some sexual behavior among primates is undertaken as a social activity.

Common elements of sexual attraction in humans
Certain aspects of what is sexually attractive to humans may differ amongst particular cultures or regions. Influencing factors may be determined more locally among sub-cultures or simply by the preferences of the individual. These preferences come about as a result of a complex variety of genetic, psychological, and cultural factors. The sexual attraction of one person to another depends on both people.

Much of human sexual attractiveness is governed by physical attractiveness. This involves the impact one's appearance has on the senses, especially in the beginning of a relationship:

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