in regards to details - really - don't ask. It can be detrimental. You think it is worse in your imagination, but the details sometimes can't be handled.....
in regards to sharing the board, I would possibly tell her you found this messageboard that you've been reading but I kind of liked the anoymity (sp) I had before H found the board - and some things said might hurt them without meaning to...
in regards to telling family - I'd vote no. If you're wanting to save your marriage, you don't want them looking at either of you differently...and they will. Find a good friend (one) that you trust and talk to them about it.
....Understand, that I can't, not be what I am I'm not the milk, and Cheerios in your spoon ~ Avril Lavigne ~ ..."Nobody's Fool"...