...i seriously think that karuna went to jai with pia's card.. and jai devised the plan to get bani in the wm...this is why..
1. he tells rano and daadi that when bani comes this time she will not go...or something to that effect.
2.he knows bani thinks that he and pia are married...(his dream)..he also knows that she is maha possessive of himđ..innumerable instances...and the fact that he thinks he and pia are married is the cause of major hatred from her side..again his dream...
3. he knows pia will not let him tell the truth..children..
so when this plan came up he seized the oppurtunity...now bani knows that that he and pia are not married as for the wedding...he will meekly agree to sit in the mandap as he knows our bani....in maha durga avatar will MOST DEFINATELY NOT...let pia get married to him...she will def. kick him out of their room..but he is banking on her to come and stop the wedding..maybe swap places...so you see...welcome to jw with brains....