It is not your job to rebuild bridges you did not burn. Be open to reconciliation. Create an environment that is conducive to rapprochement. But do not let an offender turn you into a defender. Some people are experts at beating you and crying, so everyone will think that you beat them. They know how to act like victims in a crisis they created. If you allow them to gaslight you like that, you may start questioning even your own sanity. Know where you stand. Be open to reconciliation, yet accept the status quo if they do not change their behaviour that burnt the bridge.