I’ve never felt this way before?

So recently I lost someone the love of my life or so I thought and man I loved this girl it’s the happiest I’d been in a long time and she said all the right things everything to make me love her but I never got the same level of commitment in return. It was one of the highest highs I’ve been on and it came crashing down but I feel weird usually I’m full of sadness and depression when this happens fighting back tears when alone contemplating the worst all the dramatics. But now I feel nothing. I feel empty nothingness the pain is still there I’ll shed a tear or two but more then anything it just feel nothing. Or more like that’s how I feel most of the time sometimes the frustration and anger bubbles up and than disappears just as quick. What’s happening to me?
I’ve never felt this way before?
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