Take it easy fella, I know how your feeling
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I've been there mate, exactly the same situation a long while ago.
It will hurt for a while, weeks, months .......who knows ? Just dont be spending time on your own too much right now, your head is gonna be your worst enemy
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Spend time with your mates or family and try to relax, your doing the right thing now by discussing it with people
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Yes the worst has just happened, but things WILL get better !!!
All the best now, and stay positive.