My Husband Wants Other Men

Her husband married into her family, and he cannot give it an heir. Crushed by that pressure, he comes up with a plan to save the bloodline and the marriage, and she agrees to try it. / With his permission and then his guidance, her secret attempts turn into full cooperation, until he is the one handing her to a stranger. Her shame gives way to something she did not expect. Is this saving their love, or destroying it with their own hands?