he who hesitates is toast

"Mm-hm," he hears Nat say. He's pretty sure he was staring at the screen hard enough to leave Bucky's image printed on the backs of his eyes, or maybe that's just how it feels. Steve takes a careful breath and covers Sharon's hand on his arm with his own as Nat continues, "I'd guess he thinks he's going to be too much trouble for you, for some reason. And he's trying to protect you both from that."