Sexless marriage and temptation

SO been sexless for a while - wife went through menopause - through it now, but lost drive and lost any care to keep me happy. No HRT willingness. Very good wife other than this. But this is big - painful. Ive been patient and we have had "talks" about it with no headway. I do not believe in adultry - but the longer this goes, the more I am tempted to let my guard down. I just miss physical contact, and also can seem to control my hypersexuality. Anyone else deal with this?