At 82 years of age must I assume that my sex life has expired?

I have not experienced an orgasm and five years! Perhaps it is A result of my 82 years of age. Though my wife still is irritated at my Response to other woman. Are there some things that we can do that approximates sexual activity? She is a beautiful wife, but very limited in her attitude about touching, feeling and love making. I need recommendations as to how I can get past this part of my life? I admit, however, that I cannot fulfill her because of my ED is there a difference between libido and orgasm? If at 82 it is likely that I have surpassed the good years of my sex life……. then I interest need to be told. Thanks.