Hopefully, this has not been posted before but this line has been bothering since I saw ROTS. When Padme speaks to Anakin on Mustafar she says, "Obiwan knows about us!" Anakin replies, "US?!" The way he says the line is very intriguing to me. He almost acts surprised but on the other hand it like he doesn't care. He doesn't seem upset about it or anything. Any comments about this?