You are the gatekeeper to your life and your home. You get to decide who or what comes in and what needs to stay out. If it doesn't contribute to the peaceful home you are now trying to have, then it should stay out.
In the months after the relationship ends, a person can seem to grow at a lightning rate, like in a nature documentary where weeks of footage is run at high speed to show a plant unfurling in seconds, but in reality the person has been growing all along, under the surface, and it is only in their new freedom, in their hair-raising aloneness, that the person can allow for these underground things to break through and unfurl themselves in the light.