i think that since now sachin is now in this story he will fall in love with kaajjal and maybe a mate of dev and tells him that he fell in love with kaajjal. Making dev really upset and wanting kaajjal back.😳 Or maybe that dev doesn't know sachin and when he sees both kaajjal and sachan 2gether he gets so jealous and remember the ROMANTIC TIME ❤️ 2GETHER and regrets 💔 all the things he said 2 kaajjal. 🥺