He cant. He dont.
nahh he must author said they gon have a happy ending :<
A happy ending doesn't necessarily mean Sam has to fully forgive Geon. He could still love him and choose to be with him without forgetting what he did. Forgiveness, love, and reconciliation aren't the same thing. If they're going to live together, they'll have to build something new, because Sam already said he can't go back to how he felt before. Their love might never be the same as it was, but that doesn't mean it can't still be love... And that can still be a happy ending.
like what kinda scenario would make samyeong forgive changgeon bruh....