chatting or cheating?
i'll probably get slammed here, but the important question for your marriage is WHY is he doing this? his behavior crosses a line for sure, but he is seeking out other women's verbal approval and intimacy for a reason
how is your sex life? how is your friendship? what stress is going on in your life? most men stray because they are not getting something at home, but most don't WANT to
i am not defending cheating, and verbal affairs are crossing a line for sure, but having seen many friends get divorced, it usually has to do with sex, money, lack of intimacy, lack of love, and/or all of the above
best of luck, and pm me if you want to talk more
peace,
richard
EDITED FOR RESPONSE:
Maybe he's just lonely? Has anybody thought of that? I'm not condoning virtual affairs, but who hasn't flirted with somebody? None of you ladies have ever smiled at a guy in a bar or restaurant? I'm not condoning his actions, but before you brand him a heretic, divorce him, burn his belongings and end this, think about what is really going on. Only you know if there are other issues, and since you haven't posted up ANYTHING else, we don't know. Money, sex, power, work, fights, hobbies, etc. all contribute to the state of your marriage. Some of these reactions are a bit fast and unforgiving in my opinion.
Best of luck.
Richard