I need a reminder. Shopkeeper doesn't know the full details of Yor's marriage does he? Only WISE and Yor herself know about the details of the marriage?
She asked to get married to avoid SSS suspicion and Shopkeeper allowed it as long as it doesnt interfere with her work.
But we are supposed to assume that he believes that Yor found someone she fell in love with and the SSS suspicion is the bonus, right? Or vice versa.
Like he is not aware of the whole fake marriage for Eden deal they have going on, and with how Yor talks about them he has no reason to believe that she doesn't actually love them.