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Friend

Close relationships

Types of relationships

Boyfriend · Casual · Cohabitation

Concubinage · Consort · Courtesan

Domestic partnership · Family

Friendship · Girlfriend · Husband

Kinship · Marriage · Monogamy

Non-monogamy · Pederasty

Polyfidelity · Polygamy

Romantic friendship

Same-sex relationship

Significant other · Soulmate

Widowhood · Wife

Major relationship events

Courtship · Bonding · Divorce

Relationship breakup · Romance

Separation · Wedding

Feelings and emotions

Affinity · Attachment

Compersion · Infatuation · Intimacy

Jealousy · Limerence · Love

Passion · Platonic love · Polyamory

Psychology of monogamy

Human practices

Bride price / Dower / Dowry

Hypergamy · Relationship abuse

Sexuality · Teen dating violence

v • d • e

Friendship is a term used to denote co-operative and supportive behavior between two or more people. In this sense, the term connotes a relationship which involves mutual knowledge, esteem, and affection and respect along with a degree of rendering service to friends in times of need or crisis. Friends will welcome each other's company and exhibit loyalty towards each other, often to the point of altruism. Their tastes will usually be similar and may converge, and they will share enjoyable activities. They will also engage in mutually helping behavior, such as exchange of advice and the sharing of hardship. A friend is someone who may often demonstrate reciprocating and reflective behaviors. Yet for many, friendship is nothing more than the trust that someone or something will not harm them.

Value that is found in friendships is often the result of a friend demonstrating the following on a consistent basis:

the tendency to desire what is best for the other,
sympathy and empathy,
honesty, perhaps in situations where it may be difficult for others to speak the truth, especially in terms of pointing out the perceived faults of one's counterpart
mutual understanding.

In a comparison of personal relationships, friendship is considered to be closer than association, although there is a range of degrees of intimacy in both friendships and associations. Friendship and association can be thought of as spanning across the same continuum. The study of friendship is included in sociology, anthropology, philosophy, and zoology. Various theories of friendship have been proposed, among which are social psychology, social exchange theory, equity theory, relational dialectics, and attachment styles. See Interpersonal relationships