At the end of the day, they are the best operatives the Red Room has ever produced. Even if everything else gets taken away from them, they'll both always have that innate ability to lie that lets them sell undercover operations so thoroughly. And sometimes, you just have to lie to yourself to get through to the end of the day.

There's a beat of too long silence after Yelena's question. It becomes apparent why when Natasha answers, "I was waiting for you to say 'nevermind, they're all good sides.'" Her amusement is evident in her voice.