The quintessential Hollywood "geek gets the girl" couple; we are often left wondering if Lois would have actually chosen Clark over his rather more attractive (if a little more smarmy) secret identity counterpart Superman if all hadn't been revealed.
However, it all ends in Superhero paradise as Lois decides that it's what's behind the suit that is important.
Lesson learned: Only ever reveal your secret identity when you think that maybe you won't win the girl without it