My Wallpaper changes to my partners wallpaper

eggyscram

So I have looked around the internet and I do not seem to find anyone who has had this issue before, but my partners wallpaper constantly turns into the wallpaper that I have set. For example, I changed my wallpaper and after some days it will appear on his screen even if we had not connected through TV in those few days, I have TV now deleted from my pc and only download the one time launcher each time we need to use it, but it still keeps happening. It also happened to me, that I got his wallpaper even tho he has never connected to remote control my pc. Can I please get some help, because I have ran out of ideas, TV is the only way our computers are connected, otherwise we use n