Just like how you expect your partner to be loyal to you, they expect the same from you. Cheating breaks that trust and hurts the relationship because it goes against the loyalty you've promised each other.

I agree .

Most couples break up over Finances in the USA.
It is the number one reason next to infidelity.

Many couples can live with infidelity for years. Not me though!

Trust is not just about infidelity. Trust covers many areas in life.

A Mature person should know that. IMO

I believe jealousy is a sign that the jealous person has a wandering eye. They assume that their partner has the same thought processes that they do - so beware the jealous spouse.

Deactivated

You are on point.

Yes, but did you both agree to a monogamous relationship from the beginning? Some just want to date casually, dating others as well at the same time, unsure as to whether you are the right one for them. It's better to establish if you are the only one, or one of many in the running, so you can decide if you want to continue to date them, saves the hurt and the heartbreak further down the line in my opinion.