Charles was in love with Camilla and the queen said NO! you cannot marry that girl. you MUST marry a virgin and someone you can expect children from, not someone who has been around the block a time or two. It was decided that Camilla would be an allowed distraction for Charles, as long as he kept the public eye on Diana. He has loved Camilla for a long time, and if you look at the wedding crowd from his marriage to Diana you will see Camilla up close and personal.