Vanessa Trump moved on to a Saudi prince — whose father was once suspected of indirect ties to the 9/11 attackers — after her romances with Latin King Valentin Rivera and Leo DiCaprio. Sources told Page Six that Vanessa and Prince Khalid bin Bandar bin Sultan Al Saud were even planning to marry until the Sept. 11 attacks. “They dated from 1998 to 2001 and lived together. He ditched her on 9/11; days after, he flew back to Saudi Arabia. They were planning to marry [at the time]. They were inseparable,” a source told Page Six. Bandar is part of...