Anything wrong with this?

If a taken man who happens to be goin out of town on a family emergency leave and is also unsure of when he will be back, is saying bye to clients who he deals with at work, and does it mean anything if he asks one of the clients (who happens to be. A lady) to give him a hug that he will be gone for a while? This happened at my job, and when his wife found out about this she blew the fuck up. She hates this lady and says that her husband isn’t allowed to be nice to her anymore. The only dealings the guy and the Client have with eachother is business related. They don’t hang out for pleasure. They did become friends just from handling business. Who was wrong in this scenario? The guy to say give me a hug since he is leaving for a while or his wife?