Has anyone else had feelings like it wasn't over, after a breakup?

I am going through a very difficult breakup with someone I felt is the one, and I have these deep seated feelings that things are not over between us. I know that her and I will not be together again anytime soon if ever, and nor do I wish for that right now, but these feelings are so strong. In some ways these feelings are affecting how I move forward, and I since I am forced to continue to have her in my life, how I interact with her.

Don’t worry, I am doing everything I need to do to move on and make myself better, and I don’t really want to discuss getting over a broken heart here. I was just wondering if others here have gone through something similar, and would love to hear stories.