TMW: He was not happy either. It had to be obvious that you had higher expectations for him. And he knew he could not be that person for you. Not to excuse anything he did but he was who he was. And he made no effort to change.
Take some time to heal. Then decide what you want/need in a new relationship. And don't settle for less as you did with him. He was never the man you had married and I'm sure you compared him to the ex.
In short time I'm sure you will feel like a huge weight has been lifted off your shoulders. That relationship took way too much energy.
