Margot Kidder played a fiercely independent Lois Lane....smart, sassy, self-confident, who really didn't need a Superman, and that is what Lois Lane felt for a couple of issues of Superman's Girlfriend, Lois Lane.
Get Out Of My Life, Superman
Superman missed Lois' birthday party, and that was too much for her. Lois moved to Coral City, changed her name to Lois Lorne, taking a job as a nurse (which she had the skills to do). As a nurse, Lois saved the life of astronaut Rand Kirby, and thus a new romance began. Clark Kent, assigned to a story in Coral City, finds Lois, but Lois tells Clark not to tell Superman she is here (a little hard, as Clark is Superman). Still, things go bad, and Lois admits she needs Superman's help, getting it...but, Lois (feigning being under truth serum), tells Superman she doesn't love him anymore.
No Witnesses In Outer Space
Superman decided he would travel back in time to make it to Lois' party, but, even then, couldn't make it, so, resigned himself to be without Lois. Lois, still working as a nurse in Coral City, helps Dr. Culver with an experiment, testing a gas on death row prison convicts. Some of the prisoners break free, taking Lois hostage, until Superman saves her. Lois, exposed to the gas, gains temporary ESP, allowing her to read Superman's mind, finding out he still loves her, but is scared to commit to her due to it making her a target for his enemies. Lois also abandons plans to marry Rand Kirby, but her new temporary powers also give her a flash to the future, where she sees Superman dying from Kryptonite in space, with Rand saving him, but dying in the process. Lois stows away in Kirby's rocket, saving Superman, but, he breaks her lifeline to the ship, and she passes out.
This was a bit of a misdirect, as Lois wakes up on Earth, as Superman had to snap the line as it had become tangled, so he saved her. The two patched things up, and Lois returned to Metropolis and Superman.