If they want to reconnect but refuse to acknowledge the hurt they caused when they left, they haven't changed. They just want the comfort of your presence without the accountability of their absence. Patterns don't lie. What you see is what you get and what you'll keep getting.
Loyalty to the wrong people is self-sabotage. You stayed. You gave. You bent until you broke. And they still took more. Loyalty without reciprocity is a slow death. Choose yourself. That's not betrayal, it's resurrection.