In one country, the government did a survey on how many adults were married. To their surprise, they found out that there were many more married women than men (the country didn't allow polygamy). So when they started investigating the issue, they found out that most women living together with men outside wedlock wrote themselves down as "married", while their partners all wrote down "single".
There is this thing they don't teach girls about nowadays, because it is "s8xist". Men are very good at compartmentalising their feelings. As my Grandpa used to say, there are women you marry and there are "all the others" if you get what I mean. Feminists did their best to obscure the difference, but it still exists, especially if you venture outside Western MSM.
I'll give you one example from the Turkish historical TV series The Magnificent Century (I wrote about it here). One of the characters, Bali Bey (one of the most handsome men in the show, btw), though an aristocrat, falls for a daughter of a commoner and in the end, marries her, but the girl dies from plague before they can even consummate. After the funeral, he spends a night alone at her grave, sees her shadow and swears an oath to never love or marry another woman again.
Later he visits his home province and meets his childhood sweetheart, the daughter of another wealthy landowner who rejected all her other suitors because she was waiting for him. She tells him she loves him, and Bali Bey says that he can't answer her feelings and she should find someone else as he will never look at another woman again.
And after this...he returns back to the capital and starts visiting the same wh8re-house and patronising the same pr8stitute he did before his marriage. For him, there is no contradiction, and he keeps his oath to never remarry, refusing even a foreign princess, and later, the Sultan's own daughter. Because his relationship with Helene (the Greek wh8re) has absolutely nothing to do with the kind of love he felt for his wife or could feel for any "decent" woman. That's the way many men are. Women can argue that it's unfair till they are blue in the face, but it won't change the reality.
When you are young and attractive, men will run after you and shower you with attention. They will tell you all sorts of pretty lies, with one objective in their minds. Bali Bey in the beginning wasn't even contemplating marriage to the shopkeeper's daughter. He wanted an easy fling. It's only when she rejected his advances, that his attitude changed. If the man really loves you, he should marry you. And provide for you. If you agree to anything less than that, one day, you'll regret it.