What should my wife do if she receives a text message from her colleague?

I think you can talk to that man. You say what you think. People get along with each other through communication. According to the information you submitted, they sent thousands of messages and called for six or seven hours every day. This is definitely not something an ordinary friend can do. I feel that such data can only be found by men and women in love. I think you should stop it. Be a man. Tell your troubles. No big deal.