I texted anonymously last night that I would tell his wife about his affair. I didn't expect him to call this afternoon 15, but he didn't send me a message?

The reason for calling is to confirm who sent him the text message. Telephone communication is more convenient and time-saving, and it is easier to make things clear. If there is no recording, there will be no evidence left; The reason why he called this afternoon is that he needs time to think about how to handle this matter and how to tell you.