Girls, Why do girls lean forward when sitting down and talking?

i was walking down the stairs in the library and this girl in my class called over to ask me a question. about class. she was sitting down and i was standing up. She was sitting straight up before i came over. Then when she started talking she started leaning forward. She also had on a very loose fitting shirt. Why do girls do that. Also please don t say that she likes me. Because she's like a freaking 9 and im a 3. Also she does not have much to show,. But what she did i saw. im 19 she is 18 by the way.
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+1 y
We were talking at a normal decibel.
Girls, Why do girls lean forward when sitting down and talking?
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