Oh this is an easy question to answer. Reason #1: because they think the other person will change. Reason #2: because they think the other person will change. Reason #3: because they think the other person will change.

well yea that i would agree on, as when i was marred to my ex hubby way before we got married i was hoping he would change as he cheated before during and after we got married. and of course he didnt change
it took me 2yrs to see this, and my family and friends saw this way before and i wouldnt listen.... i was so blind... now his 2nd wife has put up with him for 16yrs. and im pretty sure he still hasent changed..

DangHe cheated on you before,during and after marriage.Thats tough

Sorry can't do it... If I;m not happy I gotts to GO go

I think the biggest reason they stay is the fear of being alone.

I personally won't do it. If the relationship is bad and can't be fixed it is time to say good bye.

I agree with some of the other comments. It has to be because of fear of not finding someone else.

Fear...

Of being alone, of not deserving better, of taking a step into being happy...everybody's fear is unique.

Once over it, tho...you get to live empowered and fearlessly!

My reason would be fear

Addiction...to the drama of the relationship...fear of the unknown outside of the relationship...dependency- financial, emotional, abusive relationship...again fear of reprisals...children, debts, lifestyle- sometimes a 'kept life of luxury' will keep someone there...

as many people in the world as there are...there are as many reasons...there are no basic rules to why people choose to stay, it's unique to them.

The fantisy of thinking it can be fixed and th thought that this is security

Do they know there relationship pattern? Do they know what the people they have dated have in common? It won’t be obvious, but if they take some time they will be able to see a pattern and if they don’t like this pattern, they can change it.

It wasn’t that we intentionally sought out these type of people, but a subconscious belief was attracting them to these type of people based on their low self esteem. Those that were willing to pay more attention to patterns rather than intense feelings were able to date different type of people and ended up with a wonderful relationship. When a person is willing to learn from their mistakes by accepting responsibility for their patterns, they then have the ability to change those patterns which in turn produces wonderful results.