Having been together for decades of publication history and years of in-universe time, Superman and Lois Lane are comics' most iconic couple. They each complete each other and ground the other person, combining superhuman powers and the world's finest journalistic instincts. However, they also are powerful on their own and each have unique skills that allow them to fight evil on a global scale, whether together or apart.
Lois Lane is among many civilian superhero love interests, but she is far from 'helpless' and can hold her own under any stress. She is a reporter for the Daily Planet with a stubborn nature and a desire to do the right thing. Lois has toppled presidents, oligarchs, and supervillains by exposing them to the world. So while she doesn't need powers, she certainly deserves them, and especially the appreciation and spotlight that comes with them. Not all heroes wear capes, but that doesn't mean they deserve them.
While she may have been introduced to be Superman's love interest in Action Comics #1 created by Jerry Siegel and Joe Shuster, Lois has long since evolved. She became her own woman and a force that backs up Superman and scares the daylights out of other superheroes. While Superman is a heroic person anyway, loving Lois has given his life a more personal meaning, with the two bringing down threats which would have ended life on Earth and raising their son Jon as the next generation of hero. It's a relationship that's deeply personal, but has also steered the course of human existance and the safety of the galaxy itself. It all accumulates to the perfect future in DC One Million #4 by Grant Morrison, Val Semeiks, Prentis Rollins, Pat Garrahy, and Ken Lopez. Centuries in the future, a version of Superman reborn in the sun moves Heaven and Earth to bring back Lois in a superpowered new form.
Superman Resurrects Lois as a God
This culmination of Lois Lane's DNA being woven through time creates a version of her akin to a god in DC One Million #4. As a godlike being, Lois Lane is given a body and abilities that can withstand more than her human body could - akin to Superman's own golden final form. Despite their ascension, they keep their love for one another, which is a truly human connection. The moment comes as the culmination of a celebration of the Justice League and Superman's legacy by their distant successors, as the original Superman finally returns from a long exile, bringing a new age of hope - one that couldn't exist without Lois there too. Their marriage and reunion in DC One Million #4 is enough to shift an entire universe and make it feel 'complete'.
Superman has had other love interests like Wonder Woman, but in the end he always ends up with his true love, Lois Lane. They are vastly important to one another and Lois Lane has fought with him throughout every crisis and catastrophe.That Lois Lane enters the future as a living icon akin to Superman in raw power is a final, perfect testament to how the two improve each other and make the world better as a team.