Sometimes people can turn codependent within an abusive relationship dynamic, even if they haven't been codependent before.

Abusers are master manipulators -- they will create that fog for you on purpose. They want you to doubt your perception of reality, they want you to doubt yourself and their goal is control and have power over you.

The key is to not let them make you doubt yourself OR your perceptions of reality. If you journal all that they did to you, you will see it all as manipulation, both subtle and overt. It takes having an independent mind and a strong mind to keep your own reality in view and to not let their arguments or perspectives sway you. Abusers' perspectives are ALWAYS skewed.