Dream about your highschool sweetheart is a message for seduction and titillation. You are lying to yourself. You need to inject some more romance into your relationship. This is a clue for progress and your ability to navigate through life. Things have to be neat.
Your highschool sweetheart dream suggests anger, hostility and the eruption of some strong emotions. You need to move on with your life and stop thinking about your someone or something. You are sucking in the life energy of others for your own selfish benefit. This dream is a portent for loyalty, love, simplicity, gentleness and friendships. You are embracing yourself.
If you dreamt about your highschool sweetheart:
You will have a great time, especially if you are going out on a first date. You will feel a very special rapport with the person in question, and also very safe and secure in their company. Almost as though you have already met before. You will have a lot in common on many levels, but will also enjoy discovering much more.