Even though today's episode was sad, I'm still optimistic... I'm sure Riddhimma will bring him back (if he leaves)... That too all happy like he was before (confession ki wajah say)...
As for the promo, I think that the first one... Where she runs & sees him/maybe stops him from leaving... Is just Armaan's imagination... Whereas tommorow's precap is true... Kyunki in the new promo (14/15th July) Riddhimma says 'meh tumhe wapis lay kar aungi Armaan'... Which means he leaves & she follows him (I think)...