Be aware that your melancholic spouse may not always readily reveal all that is truly on his mind (especially if he is attempting to subdue some of his overly critical talk). Instead, he may store up the things that are bothering him until he finally has what we call the "melancholic dump." The melancholic dump is when all that is wrong in the world and with your relationship must be discussed at this very moment. Issues build up inside the introverted melancholic until it is no longer possible to remain silent. It can be painful for all parties.
From The Temperament God Gave You, by Art and Laraine Bennett
(Okay, one further comment: Scott is a sweetheart. And endlessly patient.)