Whats your input on this?

Your husband talks on line to a coworker .Sometime they talk about getting together but they never do.Would you consider this wrong or a attempt to cheat?He didnt tell you till you ran into her in town and she mentions it to him.HE says he didnt mean it.Goes on to carry on about emails you can bullshit peopel.Its almost like there not real.You can say anything.Sorta of like example you can talk about robbing a bank but that doesnt make you a bank robber.Whats your input on this.If you were married?