I have been feeling
I'm experiencing the same problem concerning a card.
Well at least I'm not going crazy (or at least not alone!! lol)
Things get a little more interesting.
If it were me, I would wonder why he didn't ask me about the journal.
How about if you were to just ask him if he is worried about you wanting to stay in the marriage and suggest he think about it and you can talk face to face when the time permits.
The card thing is common. I have a drawer full of cards that I bought for my husband that once I got home and reread .... I did not like this or that line. So I would end up going back to get another or I would end up making him one that said what I wanted it to say.
My husband "secretly" looks at my diary and journal too. I really don't care if he looks. There is no earthshattering secrets in there. There is lots of emotional truths for my husband to contemplate. I too would journal
He claims that he never saw it.
You are right about the journal.