The real concern, is why are they marrying those men they used to reject. Feelings and emotions don't go away, and "settling" is very toxic thing to most people. They usually get more resentful about it over time(both the people who settle, and the people who were settled for if they find out).

Historical Norms for humanity also involve a lot death and misery. So I'm not sure a discussion about historical norms is needed.

What is concerning is that our current society is breaking apart.

I mean, the internet is on the same level of invention as the wheel, fire, the a-bomb, etc. We should be expecting some pretty monumental changes arising out of it.

Along the lines of sex and reproduction, the real dark-horse is CRISPR-CAS9 and the genetic revolution in general. That's not just readjusting the mating process/markets, it's a wholesale tinkering into heritability and sex as an idea. Eukaryotic sex goes back about 1.2 billion years. Suddenly leaping back to the 'genetic transfer soup' of bacteria is going to rock the boat in way we can't really see today. The entire idea of 'family' and 'child' is up for debate soon.

If people can sense it, does that mean magnetic field changes can effect people ?

"Effect" meaning "bring about" ? That generally requires mating behavior.

Can it affect people? Evidently so. That is what you just read about.