Ending a relationship is never easy; after all you have been with this man for many years. Change is also never easy. I sense that your a little scared, and that is to be expected. You will get threw this.I would leave him a note, but I'm not you. If anything this will open his eyes. After all you have told him, and told him, and told him. What else can you do? Sometimes in life learning a hard lesson isn't so bad. It's really not good for anyone when a signifigant other takes advantage of a relationship.I would just state in the note why you decided to leave, and list the reasons, even though you have already have told him.