Really feels like Aria is breaking character now. She has always been completely cold, distant, and calculating before even with Sarah who so clearly cares about her. She honestly came across to me as having developed ASPD from her experiences before the time leap. Seeing her now blushing, clearly displaying her true emotions instead of hiding them behind a polite smile, and talking openly about her emotions (I won't be able to keep trusting you) without some major arc where she changes to truly open up to someone, probably Sarah, feels like lazy writing.