Yoona & Bora fight because of Siwon. One encounter was Yoona saw Bora wiping Siwon's sweat but Yoona was never give up...

One Day , Yoona , Siwon & Donghae cooked together some bibingka , leche flan & gelatin for desserts , Bora hold a spatula & hit on Yoona's head because she was jealous on Siwon. Yoona explained: "You know Bora, Siwon is my boyfriend..." & Bora replied in shouting manner :"So...", Yoona react:"If you treat me like this, I will complain to the barangay hall"

The fight is always witnessed by the costumers. One day Luna tried to stop the fight:"Yoona & Bora, stop the fight !!!". The fight reached to the barangay hall