I did NOT open the window - am I honestly going mad?!

[polkadotdinosaur]

Opened bathroom window after cleaning on Saturday as there was lots of condensation. DP complained of being cold and said he’d prefer me to use the fan, so I did.
I opened it again later that evening after my shower as the room was so steamy and I thought the fan wouldn’t cut it. Forgot about it all night so it was very cold in the house when we woke up yesterday (Sunday morning). DP was grumpy about this and as was I a bit, as we’d basically been heating the house to let it all out the window again.

With this in mind I thought, that’s it, won’t open the bathroom window for the next few days. Yesterday evening DP came downstairs and said nicely enough ‘the towels are in the wash, oh and I shut the window again’. I knew I hadn’t opened it so I pointed this out and he shrugged and went oh maybe we forgot about it and it’s been open all day, no big deal. no more was said

After dinner tonight he mentioned when he went upstairs he discovered the window open again. I was last up there having showered an hour previously. I had NOT opened the window, I know I didn’t, because I glanced over and thought nah I won’t do it. There’s no chance I was on autopilot as I remember every single action and can replay getting out of the shower in my mind.

I’ve not touched any windows in the house for the last 48 hours and I am deeply concerned that DP has had to shut the window the last two nights… allegedly.

He’s in disbelief I haven’t done it and thinks I’m playing a prank on him. I am not, I haven’t done it. I really don’t want to insinuate that this is a conscious thing he’s doing to mess with me. He hasn’t got form for that but if he’s not opened the window and I haven’t, then who the hell has, and how am I supposed to not be suspicious of him. It’s a new house so it can’t be haunted surely.

Nobody else in the house can reach the window or has been unsupervised at any point. I’m mystified.

When you close the window are you latching it shut or just pulling it too? If the former, it’s possible that opening the door (or the door of another room) is causing a pressure change which is forcing the window open!!

I didn’t know this could happen. Usually just pull it to. Would this happen even with a newer window?

So you aren't actually closing the window each time?

Of course it might open in that case

@AllThatFancyPaintsAsFair as far as I’m aware we are both doing what we’ve always done which is pull shut, it always clicks shut. We’ve been here 18 months

If it clicks shut then, no it shouldn’t open with the pressure changing in the room. However, if it’s just pulled to, (which I often do with our kitchen fanlight window as i usually open it while cooking and it’s hard to reach due to the worktop and height of the window) and not latched shut then yea the pressure changing when other doors are opened can indeed push the window open.

Probably not the point but I think you're in the right about opening the window after showering etc. You need to get the moisture out when the bathroom is steamed up. Just try to remember to close it after 30 min or whatever.