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Spencer doesn’t smile often, and Derek understands: neither does he. Reassuring smiles to victim’s family members, small smiles in response to a joke, smiles dictated by social etiquette – sure, they do all of them. Maybe not as often as other people do – people with normal jobs, people who don’t ask questions like “when was she abducted?” and “is there any sign of rape?” on a daily basis – but they do smile ‘social’ smiles. It’s the real smiles, the ones that come from true emotion, that are much rarer.
Which is why when Spencer does smile, Derek’s whole world lights up.