You don't care what kind of trouble he makes. If he wants to hit on you, just wait for him to tell you. If he doesn't confess, it only means that he is teasing you.

As for you, don't think too much. People agree that ... girls should be reserved.

Unless you have a crush on him. If you have a crush on him, take the initiative.

And don't trust anything on QQ. How do you know it was changed for you? Would you know if he told every netizen that it was changed for them?