I think,
There are people in your life that are so big, they take up space in your body.

Eventually,
You become a tangled mess- an amalgamation of pieces of you and them.

Then,
When they leave, they take those pieces with them.

Suddenly,
You are empty, there is a hole in the place they once existed.

And,
You can  never truly be full again, the space they took up was far to big.