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Casual sex
Casual sex is contact between people for which the main reason is sex. The commitment of the partners is therefore limited. Casual sex can be a one-time encounter or it can take place more often. Sometimes the partners know each other in advance, sometimes they do not.
The partners can be in another kind of relationship with one or more other persons.
If you have unprotected sex with various partners, you may run an increased risk of STIs. Use a condom to protect yourself.
A man and a woman are flirting in a bar