This is gonna sound horrible but i feel like Dan is okay with Lucy’s bad eating habits, messiness, poor dress choice (basically things that are seen as unattractive)etc cause he knows that way she wont get as much attention from other males meaning he can keep her on living his comfortable leechy life he is living because of her? But I do also want her to get that glow up kick, feel if she starts to look after herself better, she would get that attention from other males which would lead to her getting attention that you can see wants from dan (like when she dolls up and u can tell she’d appreciate a compliment) just in this case that odd day she decides to do her makeup, it just isnt enough. But personally it would be great too see her glow up and leave Dan.