I believe in happy endings. My husband and I have not had a perfect marriage by any means, there have been grave difficulties. However we are still together and still in love after 35 years. The key is, when there are serious issues, whether they be PTSD, another illness, alcoholism, infidelity - doesn't matter what - BOTH partners must examine themselves, make improvements and changes. I believe this is why many marriages fail, because one partner is willing to work and the other isn't. It's not easy, but nothing worth doing is easy I'm afraid. It must be a joint effort.