It's very common in Spanish parents ask their children: "How much do you like Mum/Dad?"
and the answer would be: "As far as the moon" for example. So the amount of love is measured in distances.
Vi har ett liknande uttryck här (Jag älskar dig till månen och tillbaka) ...kärlek mätt i distans. Om du korrigerar så sätter jag igång omröstningen.