Taharas Hamishpacha has been, per my wife, the single most important thing that kept our relationship going during the worst times of trouble and pain due to my addiction. It enabled a safe boundary for her and it made it a bit more clear to me that I really do not own her, in any way - especially sexually. It helps refresh our relationship during good times, and sends a message to both of us that we answer to a higher authority than ourselves.
Youch! It's precious!
Almost as precious as my sobriety.