You just entered a game in QQ that he didn't participate in. . Like a magic card. . Q pet fight or something. . In the application of QQ space personal center, there are. . Remember, I must have missed him there. . Then you send him an invitation. . Invite him to take part in the competition. . If you are his good friend, the invitation will be sent out. . If not, it will show something like "You are not his friend", which means he deleted you. .