Hey Karen - just wanted to chime in here about the benign meningioma. It may be a meaningless coincidental finding that would never cause you any problem. Or it could be the cause of headaches, and even, depending on size and location, memory or emotional or psychological changes - usually subtle. I would read up on it so that you know what questions to ask the neurologist.
And I agree with the advice given - bummer though it is that you can't just relax and lean on him - he needs to perceive you as strong and handling it. If he has any components of depression or MLC (usually accompanied by a fear of aging or death) the thought of the possibility of losing you or of you being needy can send him running for the hills. No, it's not fair, but it is that way, so look to your friends and family and the board for support, and don't set too many expectations for him.