I used my boyfriend's qq to send a talk, and he deleted it. His friend called and laughed, saying that he was naive and thought it was him.

In fact, this is a question of boundaries. You log on to your boyfriend's QQ to post. There are three situations:

It's your fault without his permission.

He agreed, but he didn't want to. He agreed under your pressure. But his inner reluctance will not disappear, but will be manifested in other forms in your relationship. For example, his friends laugh at him and he blames you for it. The problem is that you do it together, and you have to bear it together. Is that you are all at fault.

He agreed and was willing. He didn't judge what he sent, although he didn't know it because he loved you. He will bear all the consequences after you send it. But then his friend called and laughed at him, which was between him and his friends. If your boyfriend blames you for being laughed at by your friends, it's his problem, which is his fault.