It will not go away. It will not get better on its own. Repeated promises to change are lies. While very rarely an abuser may clue in and honour a promise to stop, if the promises are being repeated, that means they're continually being broken and have no value. Your abuser does not respect you, so don't expect them to start.
Major life changes such as pregnancy, moving, job changes, etc.
If you remove the abuser from your life, expect resistance, denial, and attempts at manipulation. All of the justifications they've used before will be brought out in full force now. They will attempt to make everything they've done appear to be your fault, both to exonerate themselves and to guilt you into remaining under their control. If they do admit to any wrongdoing, it will only be a temporary admission, used to regain your trust so they might maintain their hold on you. As soon as they once again feel in control of you, the abuse will restart, possibly worse than before.