The old commentators leap on this wording, with their shrewdness. They all say in their different ways, ‘why does she call him the goodman, why doesn't she call him her husband?’ Well, it is not appropriate to say 'my husband'.
This is a thought which the devil frequently puts into our minds when we are hesitating about going forward with some sin: it will never be discovered. Of course when he says this, he is referring to the discovery of men, for God knows what we are doing even before we start to do it.