I accidentally opened a letter to my husband as I thought it said Mrs not Mr. It reported my husband had received a great review at work and he was to get a bonus and pay rise backdated. I felt bad and thought he'd probably want to tell me himself later at night so I sealed it up. When he got home I handed him his post and casually said 'this one looks important'. He opened it in front of me and said 'oh it's nothing just pension rubbish'. I feel cheated as I'm a sahm and we have separate accounts, he gives me an allowance towards the house. I can't tell him I know as he'll know I opened his post. If I say it was by mistake he may think I'm lying. Don't know what to do?