This maybe an odd one and I might get a bit of stick over it but I feel I have to say something on this issue.
On the female side of the coin when erectile problems happen to a male partner whither due to illness such as heart attack happen and medication such as Viagra does not give the "spontinayity" ((spell check ain`t working) this can have an enormose effect on any loving relationship, so what do you do as a couple to overcome this ?
Do you just give up on sex ?
Do you masterbate each other and use "aids"
Do you bring a "lover" for your wife into your relationship to relieve her needs
i may have hit a taboo on this posting but I feel that a lot of couples are in this position and it needs talking about openly.