The 3-date rule is a dating rule which dictates that both parties withhold sex until at least the 3rd date, at which point a couple can have sex without worrying about being abandoned or considered too loose to be a good partner.

What is the 3 day dating rule?

Popularized by the romcom, the three-day dating rule insists that a person wait three full days before contacting a potential suitor. A first-day text or call is too eager, a second-day contact seems planned, but three days is, somehow, the perfect amount of time.