Klaus has no idea what she's talking about, precisely, although he can appreciate the sentiment regardless. Especially when it's in the middle of those sorts of kisses, and he holds her close, hands possessive on her waist, and kisses her back in kind, ferociously, and without holding back any of himself. They're under the bleachers, and it's a cliché if he's ever lived one, but he's never actually lived this one before.