Things turn south pretty quickly. The intense feelings that you have for each other results in a lot of conflict and drama. You end up in a repetitive cycle in which you are arguing about the same things all the time. As a result, you get fed up and then call it quits only to get back together and try to make it work again.
It becomes exhausting
Because you are in a constant state of stress as a result of your relationship drama, you begin to feel emotionally and physically exhausted. One of the feelings evoked is the fear that the relationship will end, which of course always ends up being the case. There are limits to how much we can bear before it becomes too much.