Is it possible to fall in love again? How to rebuild when everything is in shambles?

Listening without prejudices is a challenge for couples who know each other so well that it's hard for them to be surprised. But what happens when everything seems to be already broken? Can we rebuild our relationship after having crossed a line? (Spoiler) There is always hope. Nacho Tornel tells us what are the four pillars for everything to go well and how to repair those that are damaged.