Body language can include flicking the hair, eye contact, brief touching, open stances, proximity, etc.
Verbal communication of interest can include alterations in vocal tone, such as pace, volume, and intonation.
In order to bond and/or to express sexual interest, people flirt.
According to social anthropologist Kate Fox, there are two main types of flirting: flirting just for fun and flirting with further intent.
For example, kissing might be an early step in the American pattern but a relatively intimate act in the English pattern.Flirting with intent plays a role in the mate-selection process.The person flirting will send out signals of sexual availability to another, and expects to see the interest returned in order to continue flirting.In most cultures, both types of flirting may be viewed as cheating if either person is in a monogamous relationship with someone else.Some couples set up rules and boundaries for their partner so one will know what's accepted and what's not.