Quoted in New York Times on #marriage: “To have known somebody all these years, and to have lived this life together, and to have weathered the brutalities of intimacy — it’s a daring thing,” she said. “It’s an astonishing thing.” https://www.nytimes.com/2021/02/03/arts/television/mandy-patinkin-kathryn-grody-videos.html?action=click&module=Top%20Stories&pgtype=Homepage

See also, Rick Gaillardetz, A Daring Promise: A Spirituality of Christian Marriage. https://www.amazon.com/Daring-Promise-Spirituality-Christian-Marriage/dp/0764815598

And @Pontifex, "Marriage is also the experience of belonging completely to another person. Spouses
accept the challenge and aspiration of supporting one another, growing old together, and in
this way reflecting God’s own faithfulness.

"This firm decision, which shapes a style of life, is an
'interior requirement of the covenant of conjugal love', since 'a person who cannot choose
to love for ever can hardly love for even a single day.' At the same time, such fidelity would be spiritually meaningless ...

... were it simply a matter of following a law with obedient resignation. Rather, it is a matter of the heart, into which
God alone sees (cf. Mt 5:28). Every morning,
on rising, we reaffirm before God our decision
to be faithful, come what may in the course of
the day ...

... And all of us, before going to sleep,
hope to wake up and continue this adventure,
trusting in the Lord’s help. In this way, each
spouse is for the other a sign and instrument of
the closeness of the Lord, who never abandons
us" (Amoris Laetitia, 319).