Trowa never minds. (There are plenty of circumstances in which he would -- but they're essentially all ones in which Quatre would mind too. It works out well.)

He's not sure why Quatre's so uncertain today, and if it has to do with whatever he was thinking about earlier, but this answer is easy.

"Okay," he says, and the planes of his face relax infinitesimally with affection; his fingers curl a little closer around Quatre's.