lessons on love on greys anatomy (warning: spoilers ahead)

izzy: you dont need vows on your hand. when you get up there you just speak from the heart.
cristina: izzy, the heart is an organ. it pumps, circulates blood, it gets clogged from time to time. it does not however speak, it doesnt have tiny little lips on it
izzy: wow, youre all glass totally empty

burke's wedding vows
cristina, i could promise to hold you, and to cherish you, i can promise to be there in sickness and in health, i could say till death do us part. but i wont. those vows, are for optimistic couples, the ones full of hope. and i do not stand here on my wedding day optimistic or full of hope. i am not optimistic, i am not hopeful; i am sure. i am steady. and i know. i am a heart man- i take them apart, i put them back together, i hold them in my hands. i, am a heart man. so this i am sure, you are my partner, my lover, my very best friend. my heart, MY heart beats for you. and on this day, the day of our wedding, i promise you this: i promise to lay my heart in the palm of your hands. i promise you, me.

izzy to george after being inspired by burke
i am optimistic, i am hopeful, i am not sure. because i am your best friend, and because i love you, if what you want is to be with calli, then i will do everything in my power to support you, and help you make your marriage work. but because i am your best friend, and because i love you, i also have to say, that i'm in love with you. i'm in love with you. i cant promise the future, i cant promise perfection because we're us, and i'm me and who knows what will happen. but in my heart, i am sure. i'm in love with you george, and i hope that you're in love with me too.