I read a quote from Lindemann that he had a 'lot' of children by 'a lot' of different mothers. It somewhat made me lose a little respect for him. But there's a hell of a biological imperative going on there.
They should have used colored contacts! I mean for seven years he was told he had his mothers eyes but when we see Lily in the final book they're different.And his eyes are supposed to be green,they never said he had his mother's GREEN eyes in the movie.