I'm relapsing after leaving a bad relationship. Please help me.?

[Jacob]

I was once in a very bad relationship. It was all one way, she was a liar, a cheater and a manipulator to the point where a trusted friend called it an emotional abusive relationship. It took me a long time to realise this or admit it, I still don’t know which one even today, and say goodbye to her. I cut her out of my life, burned and deleted photos, deleted number , blocking her from all forms of social media. Everything. And I was happy. It was hard for the first few days but I felt light. I felt as if I didn’t have this thing weighing me down. I was happy. I became more productive, my family life improved, i was less angry and frustrated, my schoolwork improve. My life had turned around. Even when I ran into her at the shops, it was fine. I wasn’t heartbroken or felt anything. I just asked how she was saying then left, needing to be somewhere else. And I loved that. I loved not only getting drawn back but the fact that I was the one walking away leaving her behind. That was three months ago and since then things have changed.

It started off when I dreamt my best mate was having sex with her and I was so angry with him for dragging her back into my life. And I know it was just a dream but since then, she’s all I can think about. I’m feeling heartbroken, I want to see her, I want to be with her. After the dream I ran into her again. And it wasn't like the other times. I wanted to keep talking, and I felt heartbroken when she left. She was the one that ended that conversation just leaving me like she used to feeling sick. I felt sick after that. I’ve regressive, I’m at square one again.

And it’s so much worse because I came through the other side. I’ve tasted freedom, I was happy and I’m being dragged back. And I don’t want to be, I’ve been there I don’t want to go back. I’m tired. I’ve been through this, I’ve suffered, I’ve been heartbroken and I don’t want to do this. It just seems that no matter what I do, she's always got control of me. I just want to be happy. I’m just tired. Please help