Well, an ongoing photo album might be a good start. If you wanted to block out your faces and use pseudonyms that would, of course, be understandable. Most folks are more interested in visual items along those lines.
A complementary text diary in which both of you type out your thoughts (maybe in column form ?) would be awesome as well.
If you're looking for a free adult board service, you might try this one, at least to start:
The hyperlink is visible to registered members only! I hope this helps and good luck to you!
