Dad went to the hospital to see his lover, but he didn't expect to be his son's fiancee. What TV series is it?

Dad went to the hospital to see his lover, but he didn't expect to be his son's fiancee. The TV play is my fiancee. The play tells the story of a young man who is engaged to his girlfriend, only to find that there is an unknown emotional entanglement between his father and his girlfriend, which has caused a series of emotional and family problems. Among them, the father went to the hospital to see his lover and found that it was his son's fiancee.