My wife has stopped all types of sexual activity - it’s been declining for years - ive discussed it in all respectful ways- and its now becoming a frustration in my life- at my wits end - i know its not uncommon in a marriage but I’m not prepared to finish my sex life for the rest of life- because she won’t - I discuss it with mates - they fully understand- however female friends think im selfish if i cheat- she has been to doctors etc- but stopped their treatments etc ages ago - im a fit healthy male with fair expectations from my partner - but im losing my confidence in the area and need to sort it out - i dont want it to end in divorce but i dont think many other options are around - its been 4 months since i even got a bj or similar - longer for actual sex- what do i do ?