Which text example best supports the idea that Ponyboy was acting different and more open around Cherry Valance?

Pony gets philosophical and sensitive with Cherry. Cherry, her friend, Marcia, and Ponyboy strike up a conversation, and Cherry asks about Soda, because she knows he works at the gas station. Ponyboy admits that Soda dropped out of school, a fact that embarrasses him for his brother. Pony and Cherry talk about "sunrise" and "sunset": how both socs and greasers experience them.