1) A phrase often uttered by someone to their physically perfect girl/boy friend. Usually said to convey the idea that you enjoy them for their brains and intellect when the only thing you're really attracted to is their body and voracious sexual appetite.
2) A phrase often uttered by someone to their unattractive and/or extremely rich boy/girl friend. Often said to falsely lead the other partner into thinking that you like them for "who they are" and not for their money or voracious sexual appetite.
1)Highly unintelligent beautiful woman: What do you see in me? I mean, your a rocket scientist and I'm just a cashier at McDonalds.
Remarkably Handsome Smart Guy: I like you for who you are darling.
2)Grotesquely Obese Diabetic Millionaire Man: What do you see in me? Im just a fat man who cant even fit in a car to take you out to dinner.
Gold Digging Woman: Awwww, dont say that. I like you for who you are.