He doesn't say anything. He's still overwhelmed by his feelings, by the sense of betrayal by Evil Twin Magnus, by the tension his body is holding. But he's understood -- he's unfathomably grateful to be understood, to be known. He's never met someone as like him as Lan Wangji is, someone who could see him the way Lan Wangji does. It's not the careful study Claudius has made of him, though Galahad loves that study with his whole heart and matches it every day; it's not the effortless warmth of Magnus or Percival. He and Lan Wangji have struggled with each other but they're the same.