There are some people who, no matter how much to try to ignore it, make a dent in your life. They will stay in your memory long after they are gone. They will stay with you in your dreams and nightmares and your day dreams and fantasies and no matter how much you want to, you are unable to erase the trace of their memory from your brain.
These are the people whose attention you will try to grab for years and years after they have ceased to interact with you. You will somehow hope, against hope, that they will resurface, in the wake of who you have become since they last saw you.You will hope, with a lot of futility, that they will realize the mistakes that they had made in choosing to ignore the kind of person you were and you hope with all earnestness that they will take note of the kind of person you have become.
In the wildest dreams that you have ever had, this person was the center. In your most darkest moments, this person was your salvation. In your most cherished memories, this person was the one you would have liked to celebrate with.
And no matter how hard your rational, scientific mind will tell you to end this sort of fantasy world that you have created for yourself with this person, you will not. You will not forget them. But may get over them, but you will not forget them.
And so, we are left with nothing but memories, and hope and a lot of romanticism that the skeptics will tell you you'd be well to do without. Unfortunately, the human mind is not one that is built with this sort of rational thought.
Hopefully, in the end, with the passage of time and achievement (and your cortex shrinking to about half it's size by the time you're 70), you might end up not thinking so often of this person I am referring to. You will only think of it as a passing infatuation of your youth and that you are more wiser now, more adept at handling newer challenges and more practical about chasing your dreams.
But a dent has been made, nonetheless. And it will remain. If, and when it heals is anybody's guess.