I am male 46 years, my wife is 39 we belong to very decent family. Recently my wife met a gentleman in a party when I was not in the town. Post that they became very close friends. When I found out this relation I asked my wife why she is connected to this man her answer was just for chat. I told her to stop but it stopped for a short time but she again started when in the office, she often deletes the chat history and call details. I tried to convince her to share if she has any trouble, but she does not have any it seems. We weremarried since past 19 years over these period I have never except in few cases felt this kind of behaviour, most alarming thing is she is now a days more cautious about her phone and she checks if I am checking her phone. I have her wats up live messages which she later deleted call history whch she deleted, I want to deal with this situation if any one can help please advise.