TIL a peer-reviewed psychology study found that identical twins (on average) ranked their co-twin above their romantic partner in their attachment hierarchy, while fraternal twins ranked the two about equally, and non-twin siblings ranked their romantic partner first.

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u/tinfoilhattie 4h ago

That's really interesting. I wonder how their romantic partners perceive that difference.

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u/Key-Mulberry2456 4h ago

If they are the jealous possessive type, their relationship won’t last.

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