![](https://i.mydramalist.com/Xdv1QO_4t.jpg)
![](https://i.mydramalist.com/1Pv03_4t.jpg)
The Main Leads use online texting/chatting stuff to communicate with each other without knowing the other actual/real identity. Also in both dramas, the ML is the first to find out the truth about the FL actual identity and start treating her differently from before.