I believe KKC789 is exactly right, but I'd like to add that the black (of night) is replacing HER blue, rather than the blue of daylight (although that is also what is happening). She's waiting for sleep so she won't have to pine.
The line that gets me the most is "I'm building memories on things we have not said." She says so many things with JUST this one line! She has no indication of his feelings for her by his words, but rather by the way he acts around her. Her memories are based on what's unsaid, what she has to interpret. And because all she has to go from are her interpretations of his actions, this is her way of asking for him to stop fumbling around and VALIDATE her analysis and her feelings.
I believe KKC789 is exactly right, but I'd like to add that the black (of night) is replacing HER blue, rather than the blue of daylight (although that is also what is happening). She's waiting for sleep so she won't have to pine.
The line that gets me the most is "I'm building memories on things we have not said." She says so many things with JUST this one line! She has no indication of his feelings for her by his words, but rather by the way he acts around her. Her memories are based on what's unsaid, what she has to interpret. And because all she has to go from are her interpretations of his actions, this is her way of asking for him to stop fumbling around and VALIDATE her analysis and her feelings.