I can send him a message through WeChat group, but his circle of friends shows why he is not a friend.

Hello, I'm glad to answer your question.

The other party "deletes" friends, and sets privacy when deleting friends: I-Settings-Privacy-Turn off "Allow strangers to view ten photos", and when you open the other party's "Personal Album", you can only see a horizontal line under the other party's avatar and nickname. If the other person "allows strangers to view ten photos", the friend can view up to ten photos in the other person's personal album.

When a friend sends a message to the other party, if the other party turns on "Need to verify when adding me as a friend", a red warning symbol will appear on the left side of the message, and "So-and-so has turned on friend verification, and you are not his or her friend. Please send a friend verification request first, and you can chat after the other party has passed the verification. " Prompt words. If you want to add the other person as a friend, you can click the last six blue words "Send Friend Verification", then enter the verification information in the input box and press "Send" to wait for the other person to accept the verification request. Friends can also enter what they want to say to them in the input box.

If the other party turns off "Need to verify when adding me as a friend", the friend can send a message to the other party through the contact list, the other party can receive the message from the friend, and the other party can also reply to the message from the friend. At the same time, if the other party chooses "Add", both parties are friends. If the other person doesn't choose "Add", they are not friends. Because there are no friends in the other party's contact list, if the other party deletes the chat record, it can only be decided by.

I hope I can help you, hope to adopt it, thank you.