You did something wrong

Moon Hye-jung had a fierce fight with Sang-won. Because of the intense fight, Hye-jung leaves the house she shared with Sang-won. Sang-won calls her, but she ignores him and leaves. Her phone battery is dead and she has nowhere to sleep. So-eun stays at the convenience store and returns home two hours later. (The rest is in the text…) Who will apologize first?