It's at a party, and he's as close enough to his boyfriend to feel the thrill of appreciation mirroring his own run through them both almost simultaneously.
It was tiny, really, barely a tremor in Anya's hand as she was putting dishes away (reaching up, because she could, never mind that he was so much taller and it was easier for him to do!), but it sent the bad kind of chills to the bottom of Reid's heart.