Was camilla Prince Charles mistress

Answer 1

Yes. On and off since they first met in their youth.

It seems that he was too slow to propose, on the grounds that he was a serving Naval officer who would be overseas for much of the time. But it is not certain that she wanted to be Queen or Princess of Wales, and might have turned him down at that time.

She married an Army officer, Andrew Parker Bowles, and had her children by him. He was especially well-connected with the Royal Family, having supposedly taken Princess Anne's virginity, and his duties largely concerned the Royal Household in London.

She and Charles stayed close, and it wasn't long after his marriage to Diana that they resumed their affair, as Diana became aware. It was a big reason why they divorced.