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A relationship that appears to be in harmony on the surface, yet in fact both people hate each other or trying to compete with another in secret. Plastic sisters get jealous of each other yet maintain a formal smile all the time. Not particularly girls.
Look, A and B are obviously plastic sisters.
Why are they still together, A’s bf cheated on her with B?
That’s literally what plastic sisters mean.
by PG One May 31, 2018
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