Hey ladyBgud, loved ur comment.
I agree that its his subconscious mind. But when she talks about Aarti, ' Arti ka vishwas mat toot ne dena' Yash's eyes react differently. I could not get what exactly he feels. It probably tells that Aarti definitely has a place in his heart not only life. So even at subconscious level when he thinks about Arpita he cannot forget Aarti.
Arpita talks about their love but but when it comes to Aatrti, she says Aarti ka vishwas. She doesn't say ' Aarti's love' . Probably Yash feels that he can not love Aarti but he should stand up for her faith.
Yash hamesha Aarti pe vishwas karata tha aur aaj bhi karata hai. Is liye uska vishwas banaye rakhana us ke liye jaroori hai.
Yahi vishwas ek din pyar mai badal jega. we will have to wait for that.