It's a strange thing, an almost-jealousy, in knowing there are parts of Nat's life even he'll probably never know. He stuffs it down with a sigh pushed out his nose and a calming inhale. "I know you guys had history," is what he starts with. Neutral and tentative. It admits to nothing of whatever the breadth and depth of the scope of his understanding might be. "Before she got out. Back in the Red Room." The room that had been a myth for so long, with only the highly trained assassins as proof it was out there at all.