When a woman's in love, she's never afraid to hide it. She'll blush, she'll play with her hair, she'll laugh at even the lamest joke. When she's by herself, she'll spend long hours just looking out the window, smiling faintly and even occasionally sighing. We're not joking here - the faces of flirtation really haven't changed all that much since Jane Austen's day.
Once upon a time, you were the one getting all those love signals. Nowadays, we're guessing that the only time she looks slightly dreamy is when she sees that you're doing the dishes or a pair of Jimmy Choos are on sale. If it's neither of those things, and she's off in another world, smiling to herself all the time, it's definitely not about you.