For example, say one day you have a bad argument with your wife. She talks to one of her friends online who is male. He is very understanding and compassionate and gives comfort to your wife.
Please don't get me wrong I'm not saying your wife is going to run off with someone from the internet, all I am saying is why play with fire. All of us have our vunerablities and weaknesses. Good grief we all get our share of problems without opening a door possibly inviting more.
It is interesting that men can be lost in their addiction to pornography, but women can get addicted through conversations on the internet.