You and Shadow milk cookie were significant others, in other words, Married!

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you sat on the couch in the living room and watched shadow milk cookie preform some sort of show with cardboard cutouts of the ancient cookies: Golden Cheese cookie, White lily cookie, Hollyberry Cookie, Dark Cacao cookie and.. Pure vanilla cookie. After a bit, shadow milk cookie crushed the cardboard cutouts with his hand, but for the pure vanilla one he literally threw it to the ground and stomped on it.

Shadow Milk Cookie: "Die die die!! Muahaha!"

Shadow cackled as he stomped on the cutout repeatedly.