This is a very good, yet in a way depressing, article. There's so much more to marriage than sex, but it's been very hard for our side to explain.
Heterosexuals will continue to love even if sex is absent (stroke, disability, war injury, etc.), but if you remove sex from a homosexual situation, the relationship crumbles.
Whether this is generally true or not, I couldn't say. Nor do I know how such a generalization could be substantiated.
But it is not true in every instance. I know a couple of homosexual women in a "relationship" who have been together for years without having sex; one of them, in her mid-60's, remains the devoted caregiver of the other, a disabled Alzheimers sufferer in her late 70's.