Flirting is a form of human interaction, usually expressing a sexual or romantic interest in the other person.

It can consist of conversation, body language, or brief physical contact. It may be one-sided or reciprocated.

Flirting is sometimes used as a means of expressing interest and gauging the other person's interest in courtship, which can continue into long term relationships.

Alternatively, it may simply be a prelude to casual sex with no continuing relationship