Share Apple ID

You can share an Apple ID with other devices used by one person (and that’s actually a useful thing to do), but you should never share an Apple ID with someone else, any more than you would share a toothbrush. Bad things will happen. Each user should have their own Apple ID, then you can create Family Sharing→What is Family Sharing? - Apple Support. That way you can share what you want to share and not share what you don’t want to share.

Here is Apple’s FAQ: https://appleid.apple.com/faq/#!&page=faq. See the 4th bullet item.

Sharing an Apple ID is a horrible idea. They are not meant to be shared.