Viagra..turtles blood medicine. Oysters. There is a crap ton of food and medicine that helps give you an erection.
Or how about explore other sexual methods. Toys, pegging, hell you can even do bondage and see if that gets your boat going. But your first thought is to let you wife fuck someone else...just slit your wrist already and let them use your tears and blood as lube. Jesus I have never hated an MC so fucking fast. Can't even feel bad for him, everything happening to him he legit brought it on himself. Just let her go already so she can be happy now