@themcm
Are you asking if he could in her eyes?
Then the answer is a definite no because of the extent he went to get his finance to harass him. The dude is sadomasochist. He enjoyed both inflicting the pain of jealousy on his finance and the aftermath that occurred to him.
That's why he dumped the girls so readily but never dumped her.
The previous person that the Korean soul took over would probably allow him to redeem himself. Cause she might have been a masochist.
The MC is a sadist to those she has strong negative feelings for and loving to those she has positive feelings for. So he's a bad fit for her.