My Friend's Nice Mother (2017)
Original title: 착한 엄마 친구
My Friend's Nice Mother is a 2017 Korean-language romance movie directed by Kwak Yeong-geun, with a running time of 1h 19m. It stars Lee Chae-dam, Kim Ji-yeon and Jo Wan-jin.
Twenty-year-old Soon-jae has a young mother named Ji-yoon that's like a sister to him. Right next door live a mother and son the same age as them; Ji-yoon's friend Yeong-joo and her twenty-year-old son Jae-yeong. The sons fall for each others' mothers.