The complex feud between Prince William and Prince Harry has been explored here and there in tabloid reporting over the last couple years. But historian Robert Lacey devoted an entire book, Battle of Brothers: William and Harry–The Inside Story of a Family in Tumult, into reporting out what exactly happened to the two princes and the impact Harry dating and ultimately marrying Meghan Markle had on his relationship with William. Is there any hope for a reconciliation now? Yes, Lacey says, but it’s complicated. “There is texture and history between these brothers—but it’s never going to be the same,” he tells ELLE.com.