After nearly 38 years of being with the same person, 35 of those married, I can attest to the fact that healing of both partners is crucial for long term success and happiness. At least in our case it was, and we have had our share of troubles, most notable being Jim's alcoholism. Perhaps others will have a different experience, but I can not imagine the thought of putting up with an unhealthy partner all these years and still feeling happy myself.