you can't save me (baxter x suffering reader)

when you were born in the mortal world you was as sweet as a cherry everyone loved you but you had a horrible horrible secret, you were born with a dark,evil, insidious you deep in your mind you wanted your evil self gone for good until you met a smart sciencetist baxter the angler fish demon you loved him but was scared that you could end up killing him like you killed your father and others what will happen?