Why I became so aggresive person after my break up?

I'm getting anger for simple reasons without any reason.. and even I'm getting so nervous for no reason... maybe because I can't move on without him but I know I've to move on... but I'm in lot of confusion that he's loving me or not? Can anyone please say me that he loves me or not? But please don't suggest me to move on cause., It's easy to suggest someone to move on but only the person who loved knows that pain... so please suggest me any idea which probably confirms that he loves me or not?
Why I became so aggresive person after my break up?
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