It's possible.Even after finding out about Spouse A's affair, B decided to maintain the family and maintained a marital relationship for a long time.However, Eul continued to distrust and criticize A, often citing A's previous affair.A, who could not endure this, filed a divorce against her, claiming that her marriage had broken down.The Supreme Court ruled that B maintained a married life for a long period of time even after knowing about A's past affair, and since A has no evidence of other misconduct since then, A's past affair is not the direct cause of the breakdown of the current marriage, so it is the main cause of the breakdown of the current marriage. It was ruled that if B has this, A can file a divorce claim against B.[Supreme Court 2021.08.19. Refer to judgment 2021M12108]This is a procedure in accordance with Korean law. For foreigners, detailed procedures may vary. Please chat or email for specific details.