Apple Verification pop-up showed someone else’s email

It was actually the email of someone I used to date. Like 5+ years ago. Our info has never been together. It’s just weird that it would ask to verify that email on my phone. And no, no link. It was an actual Apple ID pop up. I got it both on my iwatch and iPhone

The only thing different is the Apple update that happened automatically. Other than that, all the apps I used have my info. And it didn’t come from an app. It’s asking to verify my Apple ID. I’ve never had an app ask for my Apple ID info

Highly doubt that. Our phones have never been synced and it’s been 5+ years. I’ve never gotten the Apple ID verification for an app. Only to download an app or to purchase or when I change my Apple ID password. Anyway, thanks for your help.