Husband mentioned cuckolding him and im afraid

My husband and I have been having so much issues with his ed and our dead bedroom that he suggested that we try cuckolding. He figured it would end the fighting and end me being so unhappy with him not being able to satisfy me. Im worried that if we go down this rode he wont be able to look at me the same way anymore. Im not sure if its a fantasy or just a brush off to end the arguing.