Send a message to sb. to withdraw.

Chatting with others and sending messages last night. This is not right. Send the information to your boyfriend. You should quit immediately. He said you were busy, so he wouldn't contact you. Although you withdrew the message urgently, your boyfriend must have found the message you sent, which means that your boyfriend happened to be online when you sent the message, so he found your message at the first time, otherwise he wouldn't be angry with you or say you were busy, because after all, your boyfriend must have seen it. If he can't see it, he can't tell you so. So in this case, you still have to explain it clearly to your boyfriend and tell him the truth. If you don't explain, your boyfriend will definitely misunderstand you, that you have another love and don't want to be with him, so you'd better explain it to him clearly, so as to avoid the other party from having a bigger misunderstanding of you and hurting your feelings.