Ginny--
May suggest that you keep contributing, key logger or no. This is, after all, an internet site, and your husband could join at any time, remain anonymous, and no one would know that he is reading your posts.
If you have been open with him, perhaps reading your posts will be the only way that he truly can understand how you feel. What he has heard in person perhaps he can process if he reads it in print?
Whatever your decision, I wish you the best in life. Best of luck to you.