Untold feelings

The episodes are pretty good in fact awesome these days with lotta Arshi moments...

But The monday's episode caught my attention.

It's the scene when Khushi, lost in her own thoughts says to Anjali something about 'hamari shaadi' and Arnav is shown completely shocked to the core. His expression drops and by looking at his face we can say that he was utterly horrified at the fact that Khushi was getting married to 'someone else'. and the moment Khushi changes the topic, he is seen completely perfectly normal thinking that it was her 'usual bakwas talks'.

but the thing is that why he was so horrified? I agree that he loves her secretly  but however he doesn't believe in marriage, love blah blah.. he had also told once that even if he ever meets his true soul mate then  also he would keep himself away from her. so in any case he is not ready to be in committed relationship. so why did that topic scare him to the core?

Had he subconsciously accepted Khushi as his soul mate irrespective of the differences they had? Had he started imagining Khushi in his wife's place?  Had he silently dreamed of making her 'his' and spend his rest his life with her and devoted to her? Or had his heart made Khushi so special and dear to him that all his rules were not applicable to her and she was an exceptional for him? Or is it the fear that if Khushi gets married, then he would lose her forever and ever?

Whatever the case may be, it means the same right?

So anybody would like to put light on this matter?

Thanks.