I thought that if I wanted them to have their lives resolved when they finally met again, it would take a lot longer for Daeyoung since he reunited with his mom at 20 y.o, between university and mandatory military service his actual life would actually begin at 27 so idk fkk it made sense to me that way, and I know for a fact that you can long for someone for 10 years because I fell in love very young and I yearned for just as long! (I'm fine now).