I dont think Bani is even half married to AD and I think she did completely marry Jai ... They never talk of any marriage between AD and Durga they always seem to says he walked out of the mandap so there was no marriage no half no full... there is no such thing as a half marriage its either full or its no marriage at all...
Also AD and Bani herself claim that she married Jai a second time...which means the wedding to Jai was a complete one.. so she is Mrs. Walia. Which means Jai is her husband which is great news for all us Jai and Bani Fans.
With so much negative happening in the show I just thought this post might life everyones sprits.