For Prager U, Lauren Chen answers the question "why date?"
She gives a very Catholic answer (although she is not Catholic, as far as I could find). It really should be obvious, but obviously in today's culture there is almost no grasp of the topic. Not that all Catholics understand what their faith teaches -- that is why there are so many annulments. Of course, a lot more could be said about marriage but this is a good, secular 101.
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