How to get over a mutual break up?

Me and this person only started talking a few weeks ago. Everything was perfect. We had the perfect vibe and it didn’t take time for us to become comfortable. And it felt like we’ve known each other for years. Recently a big miscommunication gap happened and we decided mutually to end this relationship. It’s been days and it hurts so bad than any other real relationship I’ve had. I don’t know how to get over this, I think about them every day and night.
How to get over a mutual break up?
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