The truth behind relationships.

The only reason relationships happen is because someone wants a chemical reward next to them as frequently as possible/on demand when they would like it there.

When they find another person that floods these chemicals more powerfully, cheating happens.

If there weren't any chemical reward, the person's presence becomes more inconvenient than anything. Perhaps even irritating.

This is the difference.

They want a drug, not a person. Otherwise anyone would do. Which is clearly not the case for the majority of the population.

However, people romanticize this very simple fundament.

That's where people get hurt.

Your ex with another person is your ex getting their fix from someone else. That person is not special. If they stop serving their function, your ex "isn't in love anymore" and disappears to the next.

All of these sayings are code words for "my dopamine and oxytocin react to this."

For now. Eventually most people get taken for granted later. Then something shiny comes around and you get left just because something else is new.

No one is actually special to them. Not you, nor anyone else. It's a lie created by the mind.