DV said to ranisa our relation has suffered from day 1 because of what I did so what he did was before his marriage ?
There are many theories here about DV.
Some think that Veer isn't actually DV biological son, but his nephew.
Some think that DV loved one of the servants and had a child before his marriage with Rajeshwari.
Even Ranisa doesn't know the entire truth. Only DV and Kumud know. So, another mystery on the way.
But I don't think Ranisa knew about Veer from the beginning of their marriage.