it's all you can think about

Cristina: "What am I supposed to say? 'I swear to love and cherish you every moment of everyday of my life?' I mean, that's not real. I mean, that's not how it works, right?"

Callie: "It does, at first, but then it..."

Meredith: "It passes."

Izzie: "No it doesn't. You guys are just used to it, that's all. You already have it, you have that thing everybody else wants. You can take it for granted, but let me tell you, if you didn't - if you couldn't be with the person that you love, I guarantee that hearing him promise you, love you and honor you and cherish you, no matter what, it would be pretty much all you could think about."