Heejin is really upset because of the age gap. I think 9 years age gap in Eunchae and Sujin I think. I hope hope hope hope a romantic date between Eunchae or Sujin make change the mind of Heejin to pursue one of those two. I really don't think that another date with Hyeyeon will change the mind of Heejin. I feel between Eunchae and Sujin will change the mind of Heejin. A romantic date the more on deep talks about themselves and learning each other