I have a friend who is basically saying this about her husband. She isn't cheating but is feeling like she might not want to stay in her marriage, but is feeling bored, restless. All of this sounds uncomfortably familiar, but we had to walk through hell to get through it, and I'd prefer to save them the journey.
I know not every marriage should be saved but from her description there is not really anything wrong other than her restlessness, which I believe is a personal issue and not a marriage one.
Any books that are helpful in this scenario?