Una hora a la semana

What truly determines the end of a relationship? Is it possible to continue talking to an ex without jeopardizing a current relationship? It can be difficult, but not impossible, as long as you follow some strict rules: 1. Limit conversations to one hour per week. 2. Never meet in person. 3. Don't fall in love again. This new, casual contact between two people who once shared a life shouldn't put everything at risk... right?