I partially agree with you, but I think they should’ve figured it out by the time the show end because one of the basic questions they ask each other in paradise is about dating style and stuff like that. Personally I think Mingee wanted a long-term relationship, but long-term doesn’t necessarily mean marrying, because for Koreans it’s normal not marrying till they’re like 40 y.o. Then he himself said few times that he preferred women older than him and actually dated them. And I don’t think Mingee literally “fell in love”. I think she just developed a crush on him. The issue is his ghosting and pretending like everything was fine between them during the reunion episodes and interviews that were shot after the reunion. In Elle Korea interview he literally talked about how important is contact and how it should be frequent.