I have a Scorp moon, venus, mercury and jupiter. If things end in a relationship yes I'm hurt but I have WAY too much pride to stalk anyone. If they don't want me what would be the point of even keeping tabs on them. It's not worth it. Besides I don't want to be reminded of anything of that person. I "kill them off" in my mind and in my heart.
If you want to break things off you need to sit down and talk to him. Explain everything because he's gonna want to know the EXACT reasons why. Tell him you're not happy and you cry yourself to sleep. Don't insult him with trying to sugar coat anything. He can handle the honest brutal truth plus it will paint a clear picture where you are coming from. He'll be hurt and maybe not right away but he will understand eventually.
I also suggest that you tell him that you want to break off ALL communication with him for a little while. This is for his sake. I always do better at getting over things if it's cold turkey. We just learn how to deal quicker when they object that we want but can't have is dangling in our face.
Its gonna bother him for a while but I'm sure he's a tough cookie when it comes down to it and he'll be fine as long as you keep a respectable distance and be honest. It could even be a good break up if you keep it calm and cool.