Each relationship is unique with how it started, the twists n turns, the highs n lows, how the couple have resolved internal and external issues.
Even if being single seems the best option from an outside view (especially with unhappiness on one or both partners) it's likely that there is some financial angle meaning that they cannot afford to separate.
So the cheating continues and the negativity worsens, despite the efforts of the cheater to manage the double-life.
As it is so damned difficult to find a true partner it amazes me the sheer disrespect that cheaters bring to the relationship,
I always wonder how life works out after separation. Anyone with experience of this? Or is it a marriage 'unhappily ever after'?