Is it morally wrong for a married man to fuck his secretary?

Morally wrong? I don’t think it’s morally wrong unless one or both of the parties are married. (EDIT: for whatever reason, I skipped over the word “married” in the question!)

It’s certainly a breach of decorum. I also think it’s unwise given the current atmosphere of sudden lawsuits and public humiliations arising from those kinds of liaisons.