Why is Aishwarya Rai never cordial with Priyanka Chopra ?

The chemistry between Priyanka Chopra and Abhishek Bachchan in ''Bluffmaster'' was loved by the audience. But according to reports PCJ and AB junior have had issues from the Bluffmaster days. It is believed that Aishwarya Rai was supposed to feature in the 2005 movie instead of Priyanka Chopra. However, PeeCee replaced Aishwarya at the last moment. Due to this replacement, Abhishek's relationship changed with Priyanka. Since then the two actors' relationship has turned cold. Although Priyanka and Abhishek were a part of Tarun Manshukani's Dostana (2008), however, they have constantly been refusing to do films with one another.