How does TRP explain so many happy young couples?

Of course there's a huge hook up culture that may reflect what many of what TRP says about alpha male types sleeping around with girls. But what about all the happy couples? From the ones who've been together for years or just weeks.

Did the men in these couples swallow the illusive pill without even realizing it?

Are the relationships all doomed to fail without proper red pill techniques due to women's inability to love and be loyal?

But most importantly, why is it so effortless for them? Without having to swallow the pill, learn bio truths, or evolutionary psych, learning game, learning how the female mind works or any of the TRP knowledge that's hidden from the mainstream