I agree with what Shasta says. I know it hurts, but in the long run you will see, he is doing you a favor by cutting you out of his drama.
I still wonder about a guy I was obsessed with 29 years ago. After all the round and round with him I finally got up enough momentum to break free, still last Thanksgiving I was looking him up on line out of curosity. I wish him well, and am thankful I am past that.
Have seen Titanic? Remember toward the end when that creep was looking for Rose among the 3rd class survivors? She hid from him, and it was the last time she saw him. Be Rose, go on and have a beautiful life, it is by far the best revenge.