Friends only show updates. Tell me, did she delete me?

If your QQ is only open to friends, then the other party can't see the dynamic updates of your QQ (including calls, of course). If you delete it, you are no longer his friend. If you have QQ in his list, he is just your one-way friend. If he sends a message, his QQ will be displayed among strangers. He can't enter your space unless he is a friend (if he appears in a strange crowd, you can add him directly).

Proved by practice, sad, hehe ~