FIL is lovely, and helps us masses with childcare, including covering awkward early morning half hours - eg when I need to leave at 7am, nursery doesn't open until 7.30 and DH won't get back from a night shift until 8. I really do appreciate it. What is driving me batty though is that he keeps using his keys to just waltz in, even though I've asked him not to. He says it's so he doesn't wake DS if he's still asleep, I've said that doesn't matter, please could he knock etc etc etc. He still does it. And he often arrives really early - as in 45 minutes before I'm expecting him - so I have on occasion been in the shower/ wandering round in a towel making coffee etc. We live in a flat and the bathroom and my bedroom are right by the front door, so if I need to grab clothes from the washing machine etc I need to run the gauntlet.
He's done it again this morning - we were expecting him at 10 to sit with DS for an hour while we go and install something in the flat we're about to move to. He arrived at 9 while we were both still in bed drinking coffee (admittedly at 9 we'd usually be up but we had a late night) with DS playing on the floor and just wandered into the bedroom and started chatting. DH sees no issue - I've asked how he would feel if my mum wandered in while he was wearing a towel or in bed and he just says it wouldn't bother him. But this does bother me! I don't know how to be firmer about it though without upsetting FIL. And I do generally really like him and appreciate all he does for us.