Ron looked at her curiously and knew enough about her to know that it wasn't nothing. Something was clearly on her mind and he needed to know what it was now that she'd almost said it. He thought maybe, from their current position and the way she was reacting to it that she was rethinking he stance on not sleeping together until they got married but he doubted that was it for some reason. As much as he loved Hermione and wanted to do that with her, if she wasn't ready for it, he was perfectly content on waiting until she was.
"Are you... Did you mean something about... Were you going to ask me if we should...?" He trailed off several times, not knowing how to word it but going on the instinct he was having about what she was about to say. Was she really rethinking it?