Action Comics #254 - Yikes, Clark!
In July 1959, we saw the introduction of Bizarro to the main Superman comics, following his introduction as a duplicate of Superboy in the Superboy series and then an appearance in the newspaper strip.
Tragically, Bizarro spends most of the issue being depressed at his state of being, with most other people not really taking his suffering seriously as they don't consider him to be an actual real person.
Eventually Bizarro overhears Lois mentioning how it's actually kind of messed up how everyone is egging on his self-destructive behaviour, leading to his over-correcting, assuming that she said that because she's in love with him, and then kidnapping her to trap Lois on a desert island to be his bride.
However, the self-loathing thing is still an issue, so Bizarro steals the duplication machine that created him to create a Bizarro Bizarro to date Lois instead, who happens to look like Clark but is even more Bizarro-minded than regular Bizarro.
Later, Superman tries to rescue Lois, only for Bizarro to threaten him with a Kryptonite boulder he had found (as you do). Next issue, Lois works out that Bizarro Bizarro isn't Superman from his way of talking, while regular Bizarro watches them make-out from the bushes.
After Bizarro Bizarro (or New Bizarro) is accidentally vaporised by Kryptonite dust, regular Bizarro and Superman get into a series of fight, with Clark trying to prevent Bizarro from just yelling his secret identity to all who can here.
Lois, meanwhile, comes up with a solution... make another Bizarro. This does work, however, and after Lois gets in on the shrubbery-peeping action, the Bizarros fly off into space, and we end on the usual weird Silver Age note.
