Dream about a letter from a dead relative hints your refusal to change. Your emotional desires are reaching new heights. You are looking to be in a relationship, but are looking in all the wrong places. The dream means the multiple aspects of a problem and the various angles of looking at the problem. There is some force trying to draw you in toward your subconscious.
A letter from a dead relative represents failure in some personal endeavor or a setback in some ideal you had
Your sense of coldness could reflect your feelings about a lover or a certain person. You need to tone it down and discard some of the negative emotions in your life. Your dream is an evidence for your own physical characteristic, primitive desires and emotional nature. You are wrong about something.