Homosociality is a sociological term for same-sex relationships that are not romantic or sexual in nature, such as friendship or mentorship. "Homosocial" is sometimes used to describe somebody who prefers the company of their own sex, but not in a romantic or sexual way. For example, a heterosexual man who prefers to socialize with other men can be described as a "homosocial heterosexual."
Homosociality is not an indicator of potential homosexuality. Studies have found that both men and women tend to demonstrate a preference for same-sex rather than cross-sex friendships and this preference begins in early childhood, although the age seems to vary somewhat based on the degree of gender segregation and gender socialization in society, with societies with stricter gender expectations segregating earlier.