How do you stop wanting to go back?

Once the truth is out there and you decided to take them back but they still end up disregarding your boundaries what did you do? Logically the disrespect should be enough to stay away and want to leave. Truthfully it’s not. There’s still anger and hurt and sadness but the deep sense of attachment and love makes it feel impossible to move on. Not to mention once you add kids it’s literally impossible to fully cut them out. How can I emotionally disconnect for good?