This is the Cato Daily Podcast for Thursday, October 29, 2015.

I'm Caleb Brown.

Dating can be very different when there is a relative oversupply of available educated women.

John Berger is author of the new book Date Onomics.

We spoke about the supply and demand of people worth marrying earlier this week.

You tell a story in your book that's almost unbelievable about a young man who has sex with a woman who is not his

girlfriend while his girlfriend is in the next room and then proceeds to say I mean she was upset but 36 hours later she was fine with it.

So what possibly explains that?

Well his perspective was it was supply and demand that in the

Hamptons where this story takes place there were just so many women and so few

college educated men that his summer girlfriend was more willing to overlook

a one-time infidelity.

And there actually is some social science that's been done on this this subject and it does indicate that women

are more likely to overlook infidelity when women are in oversupply. Supply and demand here is I think sort of a crude way to describe romantic relations

but of course how people treat each other is a partially a function of that.

So what are some of the findings that we have using supply and demand as a proxy for social relations?

Well, it's twofold.

So just stepping back, among millennials in particular,

or among millennials, there are four female college grads these days for every

three men.

That's about 33 percent more women than men.

And this lopsided dating market post-college has two effects.

...