"I-I don't understand. Did he send you to talk to me in his behalf or...? Or something."

Rico is well aware that Florida doesn't have good intentions, but he doesn't want to believe it, because if he believes it then he's in immediate danger. He looks at him with big, wide eyes. As if being cute will save him from the situation, but to be fair it's not something that he does consciously, it's one of the many defense strategies that are built in the body.