And, it goes without saying, that at least once, the book should be
mine!

I'm OK on that front - I read several books a week, while SWMBO reads at a
.....measured pace (no doubt the better to savour the content, though I
occasionaly tell her that she stops reading when her lips get tired or she gets
a blister on the end of her reading finger from following the text ;- ).

My tastes are (small 'c') catholic while hers are more circumscribed, and while
we do share some books with enjoyment (I get them first in recognition of my
less glacial reading pace), we also have our own libraries. Much better that
way, IMHO.