Sexual attraction is an attraction to other members of the same species for sexual or erotic activity. In many species this does not always mean a sexual act; indeed, some sexual behavior among primates is mostly a social activity.
What is sexually attractive to humans may change by culture or place.[1] The sexual attraction of one person to another depends on both people.
Much of human sexual attractiveness is physical (see beauty). This involves the impact one's appearance has on the senses, especially in the beginning of a relationship: