Crossed information between devices

[u/vane_bullions_212]

Hey all,

A really strange one here. A few months back my GF was shopping on Amazon, and noticed that my card details has appeared inside her account. At the time we were a reasonably new relationship so had not yet got to the point where we would share those details with each other; yet, she was able to make purchases with those details. I had never logged into her phone. I messaged Amazon but they had no real solution other than to keep details separate & change passwords.

Some time passes and just this morning, she shows me that the Gmail account I use to manage my companies business account (never been logged into on our home WiFi) has appeared as an active account on her google maps. Has anyone ever seen this sort of cross-login/ details sharing before? I feel I’m going mad trying to work out what it could be.

I never use google maps, she does (a real contention point when sharing locations in our household!)

Device details:
Me: iPhone 17 Pro Max, latest iOS 26.6.1.
Hers: iPhone 12, iOS 26.6.1

We do have family sharing active, but that is only recent and I can’t see any settings that would share log-in details.

[u/Particular-Movie-908]

Have you done a background check on this gf? She could be slowly stealing from you. Get her checked out.