Yes, Superman did wipe Lois Lane's memory in Superman II.
In the film, after Superman returns Lois Lane to civilization following their time at the Fortress of Solitude, he takes a significant step to protect his secret identity and Lois's safety.
Here's how and why it happened:
- The Act: At the Daily Planet the day after their return, Clark Kent embraces Lois and kisses her. This was not merely an affectionate gesture but a deliberate application of his superhuman abilities.
- The Purpose: Through this special kiss, Superman used his powers to erase Lois's memory.
- The Scope: The memory wipe specifically targeted the knowledge of her past few days. This period included her discovery that Clark Kent was indeed Superman, their shared experiences, and the intimate moments they had.
- The Outcome: By doing so, he ensured that Lois would no longer remember his secret identity, effectively restoring their previous dynamic and protecting both of them from the potential dangers that could arise from her knowing the truth.
This act was a pivotal moment, resetting their relationship and re-establishing the secrecy surrounding his dual life as Superman.
