How to deal with heartbreak?

Got my heart broken for the first time ever. Cared way too much for this girl and in the end I wasn't good enough for her. All the while she was seeing another guy simultaneously. It really sucks. I've never been very emotional in my life, couldn't even remember the last time I had a good cry since being a kid. Now for the past week it has been like water works.

I don't know how to deal with this emotion as I've never experienced this before.
What do I do to get over this heartbreak?
How to deal with heartbreak?
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