The term significant other (SO) has different uses in psychology and colloquial language. Colloquially, "significant other" is used as a gender-neutral term for a person's partner in an intimate relationship without disclosing or presuming anything about marital status, relationship status, gender identity, or sexual orientation. Synonyms with similar properties include sweetheart, other half, better half, spouse, domestic partner, lover, soulmate, and life partner.
A United States Marine kisses a woman described as his "significant other" before going to Afghanistan.
An intimate relationship is an interpersonal relationship that involves emotional or physical closeness between people and may include sexual intimacy and feelings of romance or love. Intimate relationships are interdependent, and the members of the relationship mutually influence each other. The quality and nature of the relationship depends on the interactions between individuals, and is derived from the unique context and history that builds between people over time. Social and legal institutions such as marriage acknowledge and uphold intimate relationships between people. However, intimate relationships are not necessarily monogamous or sexual, and there is wide social and cultural variability in the norms and practices of intimacy between people.
Intimate relationships involve emotional or physical closeness.
Marriage is a form of relationship maintenance that signals commitment between partners.
Intimate relationships impact well-being.
