What does this quote/statement mean and does is relate to the question below?

Quote?: "I was half in love with her by the time we sat down. That's the thing about girls. Every time they do something pretty, even if they're not much to look at, or even if they're sort of stupid, you fall half in love with them, and then you never know where the hell you are. Girls. Jesus Christ. They can drive you crazy. They really can." - Holden Caulfield

Question: Are teens promiscous because of what they see in movies?