Time heals. It's slow and it's painful but it works. Talking helps, going out with other people, seeing friends. She'll be like a book you read long ago. If you trust that if it's meant to be then it'll be again, and if it's not you will wake up one day and realize that you hadn't even thought of her once. And then you'll be free.
Everybody has a home team: It's the people you call when you get a flat tire or when something terrible happens. It's the people who, near or far, know everything that's wrong with you and love you anyways. These are the ones who tell you their secrets, who get themselves a glass of water without asking when they're at your house. These are the people who cry when you cry. These are your people, your middle-of-the-night, no-matter-what people.
Some relationships just don't work out, no matter how bad both parties might want them to. Sometimes time, distance, and circumstances get in the way. And sometimes we have a purpose for our lives that couldn't be fulfilled inside the bounds of that relationship.
I want to know you. You seem like someone worth knowing. Every day I feel like I'm surrounded by people with hard edges and sour faces but I get the sense that you're different. Too often people seem to think that they have the answers to everything. Their faces are trapped in permascowls and they can't be bothered with anything besides their own narcissism. You aren't like that. You still ask questions. You're still looking for the answers.