Director Oliver Stone spilled the beans on his young “Wall Street 2” co-stars, Shia LaBeouf and Carey Mulligan — confirming that the duo are indeed dating. At a press conference for the sequel to his smash 1987 “Wall Street,” Stone talked about the pair — who play “a couple in love in their 20s” in his new movie — and admitted “they ended up as a couple” in real life. Joking that he played cupid, Stone said with a smile, “I seem to be a good casting director.”