Not an ex, but my wife got a Bull, a long-term lover after we started with cuckolding. Over time, she has cut me off from intercourse. Obviously, her lover still gets it. And he preferred a hairy pussy, so she grew out her bush for him even though she knows I don't like it. While I wouldn't really say he "owns" her pussy, he's the only one that gets intercourse and she takes his preferences regarding how she keeps her pubic hair more serious than mine.