Why do some women seem to be attracted to toxic relationships?

Today I was sitting in a charity dinner, and I had 5 girls sitting around me (5 girls, 3guys)
I am not shy but hard time fitting in as non of there topics I can add to it.
But then they started complaining about how bad there boyfriends are, and how toxic they are. And what not.
After some Inputs from them topic shifted what do you girls do, then 2 of them said have fight on a stupid topic.
And other 2 said just fight him for no reason, just to push him off the edge and wait for them to console or plead guilty.
I only understood that they are equally toxic to there partners.
1 was only saying he is too nice but toxic as in have some restrictions, and those restrictions are only for her own safety etc.
I don't any experience in relationships so I don't know.
But please explain why these things happen
Why do some women seem to be attracted to toxic relationships?
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