Husband and wife only have love, but have no sex

如果人老咗,無咗性衝動,並已相處了很長的歲月,彼此需要的
是關心對方,互相依靠,會待直至伴侶死去.
這些都是大家互相心意相通,關懷了解,所得的樂趣,只要大家
相處世上,就會開心快樂.
像電視劇的神鵰俠侶,大家身處古墓生活,都不覺苦.

Sex is one of the ways to express the passion of love.
Of course sex is a catalyst to smoothen the relationship between two. But mutual trust, respect & care are more important.
However, worse sexual life between couples may bring a big impact.

Yes , they will be together forever even there is no sexual between them
As love is not fully based on sex , so if they can enjoy the time with each other , positive utility between them make them still be together