Welcome to SR! All of us here love an addict, therefore, you are not alone. You will find support here. The addicts life is a very selfish life. You need to be good to yourself & take care of yourself, whether it means leaving or not, is your descision. I would certainly suggest keep posting here, read the other threads & naranon family group meetings (for you), you will find hope, understanding, experience and strength.
Hugs,
Chris