Gillian Flynn said this quote

But it’s tempting to be Cool Girl. For someone like me, who likes to win, it’s tempting to want to be the girl every guy wants. When I met Nick, I knew immediately that was what he wanted, and for him, I guess I was willing to try. I will accept my portion of blame. The thing is, I was crazy about him at first. I found him perversely exotic, a good ole Missouri boy. He was so damn nice to be around. He teased things out in me that I didn’t know existed: a lightness, a humor, an ease. It was as if he hollowed me out and filled me with feathers. He helped me be Cool Girl – I couldn’t have been Cool Girl with anyone else. I wouldn’t have wanted to. I can’t say I didn’t enjoy some of it: I ate a MoonPie, I walked barefoot, I stopped worrying. I watched dumb movies and ate chemically laced foods. I didn’t think past the first step of anything, that was the key. I drank a Coke and didn’t worry about how to recycle the can or about the acid puddling in my belly, acid so powerful it could strip clean a penny. We went to a dumb movie and I didn’t worry about the offensive sexism or the lack of minorities in meaningful roles. I didn’t even worry whether the movie made sense. I didn’t worry about anything that came next. Nothing had consequence, I was living in the moment, and I could feel myself getting shallower and dumber. But also happy.