If a man we don't know phones us up one day and talks a little, makes no suggestions, says nothing special, but nevertheless pays us the kind of attention we rarely receive, we're quite capable of going to bed with him that night, feeling relatively in love. That's what we women are like, and there's nothing wrong with that - it's the nature of the female to open herself to love easily.
The fact is unalterable, that a fellow-mortal with whose nature you are acquainted solely through the brief entrances and exits of a few imaginative weeks called courtship, may, when seen in the continuity of married companionship, be disclosed as something better or worse than what you have preconceived, but will certainly not appear altogether the same.
Of course, everyone's parents are embarrassing. It goes with the territory. The nature of parents is to embarrass merely by existing, just as it is the nature of children of a certain age to cringe with embarrassment, shame, and mortification should their parents so much as speak to them on the street.