Taylor Swift’s boyfriend foresaw Princess Charlotte’s “polite and engaged” personality, a royal commentator has exclusively told GB News. The US singer met up with Prince William, Princess Charlotte and Prince George before they watched her concert in London in June. Both the Prince of Wales and Swift shared photos of themselves meeting each other on their social media accounts. It was a part of Prince William’s 42nd birthday celebrations. Swift posted a special birthday message for Prince William on her social media account. The post read: “Happy Bday M8! London shows are off to a splendid st…