You will. I promise you will.
There is one person in my life, if I could just drag everything about him to a trash can in my brain, then hit erase... Are you sure you want to delete forever? Yes... Yes, I want to delete it forever.
But it's not the awful, raw, aching misery it was when we were first over, when he first left my life. Weeks and months go by without thinking of him. Most of the people in my life don't even remember his name anymore, he is so far removed. It's only a select few who still remember him, who remind me of him now and again (not on purpose, just by nature.) And I only really mourn the lie, because it was lies. How can I mourn a person who never really existed anyway? And I feel sorry for him, because f*^% am I an awesome friend, and he doesn't get the benefit of that anymore. I am really not the one missing out, not missing out on anything but more lies, more fantasy, more hurt, while he is missing out on me.
I think I got the better end of that deal, and so did you. it will take time and oh yes, it is painful... But it will get better... You will heal. And you will move forward.