To update the situation... My husband did give me his passwords/access last night. He didn't protest or try to make me feel bad about it (although when I came home and he complained he was "tired" and "had a headache" I worried he was going to try to get out of it).
There were a couple of things that surprised me. The first is that he gave me his real password. I know this because when he told me his password it suddenly dawned on me... 10 years ago, during EA #1, I had surreptitiously figured out his email password, and had used it for a period to find out what was really going on. But, I felt like if I found something I couldn't really tell him without outing myself as a "snoop" and becoming the "bad guy". He may have deserved it, but it still felt awful to me, and I ended up stopping. Eventually I forgot the password. But when he told it to me yesterday, that light bulb went off.
The other surprise was that he gave me access to more than I had technically asked for. Along with email/IM/computer/etc. he also gave me the password to his credit card and cell phone account (we have a family plan, so the discussion had been to give me authorization to view the statements, but I wasn't expecting the password to his account).
I also reciprocated and gave him my passwords.
Me: 29 Him: 30 Married: 2 years Together: 13 years No kids Bomb: 6/4/10 Started MC: 7/16/10