Some more quotes. Maybe they can be useful, though it's Clark speaking, not Superman. I know they're the same, but you know what I mean, don't you? :p

From Neverending Battle:

Lois: How long can you hold your breath?
Clark: A very long time.


From Ides of Metropolis:

Lois: You know I have a funny feeling you didn't tell me your biggest secret?
Clark: Well, just to put your mind at ease Lois, you're right, I didn't.


From Operation Blackout:

Clark: People can have two sides to their personalities. Lois, believe me, I know.


"My wife's love is what unites Krypton and Earth in my heart. Without it, without her, I truly would be in hell."

~ Superman: Man of Tomorrow #15