He says to her: "Okay, you have to got your clothes on."
She says: "Yes, I really love you. But you cannot fuck me right. Look he can do it. You saw it."
You say: "What?"
She says: "I want you as my cuckold. It is the only way for us. Do you want to give our relationship a future?"
You feel bad, but you agree: "Maybe you are right. I do mistakes in the past and it is time to pay my bills. I would love to be your cuckold."