It is manipulation but it is not gaslighting. I really need people to stop using that word incorrectly. He is not making her doubt her reality or memory. But it is everything else you said, for sure.
He didn't threaten to commit suicide... he's saying he won't be like his mother who only waits. In fact he's saying he'll forget maxi because he didn't want to be like his mother.
That's why maxi says, she will return because he's not been abandoned
god i love everyone's character design. it's fuck fjo's mother but like HELLOOOOO HER DESIGNNN HER CHARACTERIZATION R WE SEEING ITTTT