They run around believing in "unconditional love" at their own risk. While reading book and watching some movies, People fall in love and they can fall out of love. Like how most people have divorced and most will say that they hoped or thought their marriages would go the distance because they were madly in love but something happened and the love disappeared. But for Enzo and Ashley, love didn't vanished. The time did. It would be great if everything worked like in fairy tales and they lived happily ever after and when the director yelled cut, they can pressed rewind. But it aint like that, at least most of the time love is really limited.