@Seynee Actually, Chapt. 38 Jung kisses Sokhee and then Sokhee sees Jung bring Rena up to his apartment in Chapt. 39. Then Chapt. 47 Jung confesses to Sokhee then Chapter 48 goes for Coffee with Rena and brings her back to his apartment in 48. That's A LOT less than Sokhee talking with her ex...
@Seynee Actually, no. Through the entire beginning of the series, Jung didn't do anything about Rena because he didn't have feelings for her anymore. He didn't explain any of his actions to Sokhee until she confronted him about it (the chapter after Rena was in his apartment) which was a...