There may be thousands of reasons why a person made a mistake, and then recognizes it was a mistake.
Some people have highly disturbed unconscious minds, or repressed emotions, that may arise from time to time and cause problems overwhelming the conscious mind. I know this for my direct experience, both personal and with others.
Planets, transits and Natal Chart issues also have a role in creating problems in one's life.
So if the person is honest, you can give a chance. It depends if you can take part of his/her "wrong" behaviours, that may be part of his/her natal chart. I do not mean you should accept any abuse, but if the person has a strong will to correct or - at least - limit the amount of damage doing to you, you can try. No relationship is perfect. I see, so many people have big problems in relationship.
If I were you I would evaluate pro and cons in the overall view, and think.
If you say the other person does not want to change and ignores your requests, well this sounds as a "no way" to get back.
Only you know how big is the "wrong behaviour"
