I can 100% guarantee you that KD is going to break Kiya's heart. If I know the production house well, the formula is same as MJHT. First KD/Kiya fight, while Panchi/RV are best buddies ... then KD/Kiya patch-up, while Panchi/RV fight ... then KD/Kiya fight ... ok you get the picture.
I have to admit that I am KD's fan...not Kiya's. KD/Kiya's scenes are boring because they have explored the love angle too soon. Had I been the writer, I would've shown some gradual genial friendship, without the chui-mui type awkwardness. Like the beach scenes. The Ishq wall LOWE is ruining their chemistry IMHO. I am not looking forward to see the hug AT all.
KD IS going to break Kiya's trust. His character is too intense and brooding to let go so easily. Yea, he might have forgotten his focus in the jungle and with the buddy project, but once he sees Kunal and gang, his antennas are going to be retuned to "punish Kiya" mission. He will punish Kiya and later repent when he gets to know the truth. But by then Kiya will be back to her diva self.