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One: boring
Ever since breaking up with you, her world has been raining and she can't do anything.
Life is boring, work is not motivated, life is hopeless.
It shows that you are important in her life and that she relies on you, so when you leave her, her life becomes a mess and she loses confidence in life.
She really loves you so much that after you leave her, her world goes gray.
Two: Obsessive
She still misses you, keeping your clothes, your groceries, and the way you looked when you left.
You left her life, but not from her heart.
She also pays attention to your dynamics, and your movements can get her attention.
If you have other people of the opposite sex close to you, she will still be nervous, jealous, and depressed.
People still have you in their hearts and love you, which is why they behave like this.
But no one who really loves you can let go of you so easily.
The various performances of the above women show that she really loves you, so she will become this after separation.