I won't comment on the love angle, other than to comment that our current notion of love is a 19th century European invention that doesn't really exist in most traditional societies. There's ways of getting along that don't involve long courtship, touching poems, or passionate romance.

And it's funny you mention Lewis. The mother gave me that book as a present last March. Great book. I should note, he didn't particularly love his children at all at first...until the child was stricken ill and he had to care for him.