Some possibilities
1) Rithwik provides body heat. Nothing more than that happens between them
2) Palak being a doctor is totally cool with it the next day..she understands the medical significance
3) but this experience makes them crazy about each other.. they can keep thinking about it..till now they had only a kisss to think abt
4) this makes them feel awkward too..Rithwik is worried about what Palak will think provided his reputation etc etc
5) by the time they reach back, there are more than enuf misunderstandings between the 2 families ( thanks to Rishu Bhai) that in donon ke Rishta ka Kuch nahi ho Sakta
6) They both do not want to hurt families..so decide to break up and move on for their happiness..
7) somebody ( Kabir/ Rishab's spy/ Puri's spy) would have taken pics of Palak and Rithwik s body heat scenes and release them over the internet
8) Palak ki life kharab ..palak ke Dad sadma bardash nahi kar paye..he dies..
9) Rithwik feels responsible..he wants to marry Palak..his family says no..no bachalan gold digger ma Beti...so Rithwik has to leave them..
Keep the ideas flowing guys...kya pata show ke writers yeh sab pad le..
π