If I am not mistaken they must have had probably a year and half together after which she sacrificed her entry to jail for the next 9 yearsπ Since Kunal is dewaana in Siddhi's lubh he would have remembered each and every moment they spent together a million times in the years gone by!π
I would have preferred if they showed him bring the diary the next day and read out to her the entries starting from their marriage!π Walk that journey again!π Mix it with wunnerful flashbacks and no one will complain , I promise I won't!π
That scene did little to convince Siddhi of his love , it semed like Kunal was trying to convince Gaurav and Seema!π