We got married two and a half years ago. I wrote (admittedly slowly) all the thank-you letters for my side and our mutual friends, but I asked him to do his side and he said he would. Just found out he didn’t, (found the stash of unused thank-you cards), so loads of people who bought us generous gifts have had a ringing silence for the last two years. I’m mortified but also really cross with him. Mentioned it to my mum and she said I should have made sure it was done. But I think it was his job, I shouldn’t have to monitor him! AIBU?