I am almost sure that whatever Gayatri ( new villian in KTH ) said abt ending up marrying Sujal is false. At first I thought that maybe it's true , coz Ekta might wanna link Kashish to Kartik somehow, but after reading his chat transcript where he replies that nothing is confirmed as of now of him marrying someone in the serial, I don't think Kashish will end up with Kartik, but I feel that Sujal and Kashish will re-unite very soon.
But then again we are dealing with Ekta and her so-called creatives, who can change the script anytime 😡 😡.
The possibilties can be:
1) Sujal & Kashish re-unite very soon
2) If Charu dies, Kashish will start blaming herself( mahaan as usual ) and might not even get together with Sujal
3) Sujal & Gayatri end up marrying indeed ( which I doubt )
4) Kashish & Kartik end up together ( which I doubt also )