Melancholy spouses are highly sensitive to the feelings and emotions of other people towards them. How people treat them or react to them really matter to them, even though they might not verbalize it, it sure do affect mostly the area of their trust.
Melancholy spouses do have trust issues because they are very skeptical and suspicious people. They are so mindful of details that they demand an explanation for every move people make around them.
A melancholy individual will need to be open to trusting the Lord, which in turn will help him/her to trust people and be more secure about the people they love. However, their spouses will need to be very open in their relationships and conversation with them so as not to confirm their doubts.