Kylo sees that retreat for what it is, and his hand twitches around the place where her hand once was, temperature plummeting around them as he realizes what his reaction has done to her. His inner conflict was meant to be for him to deal with alone, and he can't stand the thought of it hurting her as well.

His mouth thins into a determined line. He has to make her understand—but he doesn't know if that will make this better or worse. He just has to hope the truth is the best path, and secrets have never helped him, anyway.

"Rey," he finally manages, not allowing her attempt at a distraction to stop him from cutting into the heart (hah) of the matter.

"I've been stupid," is what tumbles out after another moment, and he tries to reach for either of her hands again. It's a great start.