Here's how
after they get married (hopefully they will)
Kumud will go to Kshitij's room and then find his diary!
(Remember the diary that Arymaan read about how Kshitij feels about Kumud?)
And the Kumud will read it and realize how much Kshitij loves her! She'll feel guilty and remember the times she spent with him and everything! Hopefully that will happen cuz I can't believe she can just forget him like that. When they were together she could feel his presence with out him saying a word or everything but then when she married Garv, she forgot him in a finger snap!
Well ok so that's what I think...Kumud may read his diary and realize what she missed out on! Hope their marriage will last!