How to get over heartbreak?

Broke up with me because he wasn't ready for a relationship.. he's my first love and I miss him dearly :( we have not spoken for weeks now.. both giving each other space which I know is for the best..
but all I want to do is call him and see how he is.. is this a bad idea? I can't get him out of my head, I'm so hurt yet he's still all I want..
what should I do? 😖
How to get over heartbreak?
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