What evidence do we have that hook up culture is present or not present in today's society?

There is a great deal of evidence that hook up culture is present in today's society. Studies have found that a majority of college students engage in casual sexual encounters, and that the majority of those encounters are initiated through online dating apps. Additionally, research has found that hook up culture is becoming increasingly normalized among young adults, with more and more people engaging in casual sexual encounters without the expectation of a long-term relationship.