After many research i find myself to the conclusion that why Yashji love Aartijis back and hair so much, love them to the core, though the Kodiakanal shoulder scene between them came later, but this is how Yash felt the sensation for the first time, during Mansi's wedding too they collided same sensation then he noticed who giving those vibes, oh girl with sensuous back and lustrous hair, something triggered in his brain and subconsciously he fell in love with them and finally when they married his brain and heart put two and two together and voila epic love story!