The situation is different when in a sacramental marriage, a committed relationship.
I'm arguing this point for someone who is unsure whether this is the person they will spend their life with, not a sufficiently explored courtship or marriage.
Discussion
I married him because he approached me as if he were completely sure and I got overwhelmed by his confidence.
That's what it is, to be swept off your feet. The stuff of every romance novel and the tale every happily-married woman will trot out for anyone willing to sit still for long enough to hear it.
Because she knows that she is living the dream.
I'm happy that was what happened in your relationship, I'm not dissuading anyone from having that expectation.