Not that Nine/Rose was really that much healthier, with Nine's genocidal survivor's guilt and manipulating Rose into picking him over her family. But that's the great thing about both Nine/Rose and Ten/Rose - you can write fic running the gamut from fairly sweet and normal with darker undertones to completely screwed up, and it all fits into what we see on screen.

Personally, I think the best bit is Doctor/Rose/Jack, but there you go. :P