“It made me think of St. Teresa of Avila and St. John of the Cross. I would say they had a very intimate relationship where there was no sexual expression towards one another. That’s what I choose to believe anyway.”
Spiritual closeness and a deep abiding non-sexual loving relationship is beyond a secularist understanding.
I don’t know if you can strive for spiritual closeness or it just happens. But Jesus said there would be no marriage in Heaven. To me, that implies that there will be no sex but still loving relationships, maybe even more loving than on earth.