Double Subverted: But he wears an incredibly realistic mask to hide that he's a burn victim.
Bob is hideous, Alice is beautiful, but they live in a world of Bad Is Good and Good Is Bad so everyone wonders how Alice lucked out or why Bob settled.
Bob thinks he's a stud, Alice frets over non-existant wrinkles.
Zig Zagged: Bob looks hideous, but he's wearing make up for a movie, only for that to be a face mask to hide the fact he's a burn victim, only for Alice to reveal she's also wearing a mask to hide the fact she's a burn victim, but then a photo reveals that Alice was attractive and Bob was fugly before the accident that turned them both into burn victims, only for an earlier photo to reveal she had extensive plastic surgery.
Averted: There is no extreme difference in looks.
Enforced: The writer of the sitcom is the main character and he gave himself a lovely wife.
Lampshaded: "Geez Bob, how'd a dog face like you get a pretty girl like Alice?"
Invoked: "Don't worry Bob. It doesn't matter that you're ugly, she will still marry you."
Defied: "Look, I don't care if I could buy a dozen hundred dollar an hour prostitutes a night, I've loved Alice my whole life. I don't care she turned out, as you call it, 'plain'."
Discussed: "If this were a sitcom, Bob would be dating Alice despite the fact that he's ugly."
Conversed: "It's so weird how, on TV, the ugly guy always gets the girls."
Deconstructed: Bob develops a serious inferiority complex against Alice's awesome looks and is constantly worried she'll leave him for some stud, or Alice feels that given Bob's money, Bob views her as a trophy wife and will dump her the moment someone better looking comes along.
Reconstructed: They realize that despite what other people think about them or what other people have done, Alice and Bob still love each other.