How you not be conditioned to think this wouldn’t happen again?

So I had an abusive relationship with a women end a few years back where I was called horrible names and hit in the relationship. Even her own mother acknowledged I was being mistreated but in the end people still ignored it and no one confronted her. Ultimately she decided to end the relationship one day cause I stood up to her bullying. Well since that point cause she did real damage to my mental health to the point where I just think if I get into a relationship it will just happen again now i understand women are different but the thing is this girl presented herself as someone nice and pretty much faked being a good person

How you not be conditioned to think this wouldn’t happen again?
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