I'll start by saying that I don't think that you are a bad person by any means. I think that you have made many mistakes in your past that you need to learn from, however. You were once a huge part of my boyfriend's life, and I respect that.
There are parts of him that he learned from you, both good and bad. I understand how difficult it is to let go of someone that you once loved, and that loved you back. I've been there, it's not fun. However, here's the thing. He's not yours anymore for a reason. I'm tired of this game you play everyday hoping that the things you say will somehow tear him away from me. What exactly are you expecting to gain from this? The pain of hurting someone else and pushing your ex further away? Each and everytime your name pops up on his phone, you look more pathetic than you did before. To him and to me.
Find the love in someone else that I've found in your ex that you failed to appreciate while it was there. I appreciate him each and everyday. You had your chances, yet you took advantage of the kind person he is instead. A person can only take so much until they walk away. I'm so glad he made that choice. Go be happy on your own, and stop trying to tear what we have apart. You may feel like I am your "replacement", but no, I am simply someone who is better with him than you were. I am not your enemy, nor someone who is with him for the wrong reasons. I promise to make him feel loved everyday, since I hope that's what you would want.
Now go leave him alone and find the love of your life. He is out there, I promise. Move on.