Almost the same reversed situation but with a different plot in Beauty by Tanith Lee
Let me start with the beginning....The father,Levin, and the three daughters: Lyra, Joya, and Estar, who lived in a robot-run house. This time the rose is green...even the little daughter's hair, Estar is green-brown...She has to live with an alien...she refuses to see at first in his full"splendour" naked,she dreams of him every night, refuses to admitt that she loves him, to discover in the end that she has alien genes because she was supposed to be aborted but alien seed was planted in her mother's womb(the woman who had carried Estar inside her) and Levin refused to gave her away, accepting her as his own, so she doesn't look like an alien. He tries to convince her to be his wife because they are able to make living children, but he allows her to decide. She finds him "strangely alienly lovely", now that she know that she has alien blood.
"She shut her eyes then, and let him move to her across the dark. And she experienced in her own mind the glorious wonder he felt at the touch of her skin’s smoothness like a cool leaf, just as he would experience her delirious joy in the touch of his velvet skin, the note of his dark and golden mouth discovering her own."
curious ??? read the story...you'll love it...full of weird descriptions, your imagination will simply fly away, and, you'll discover how patience he is...the moment she asks to see him as "he is", and she decides to see him at the pool...
