EvangelionFan: The only time in this scene when Shinji blushes is when he realises his hand is ontop of Rei's breast. Once he removes it, the blush is gone and the nervous lines from earlier return.
NemZ: Of course, because he expects punishment for this. After that he’s just plain baffled at her reactions or lack thereof.
Fireball: And now just think about how alternate Rei would react.