Well, that was fast. A source tells People magazine that Scarlett Johansson and Sean Penn are no longer together after an alleged whirlwind romance that took over tabloids. Rumors began that the two split after 26-year-old Johansson did not attend the Cannes Film Festival with 50-year-old Penn, who was promoting Tree of Life, in May. Johansson and Penn reportedly started seeing each other in February and photos surfaced of them together at the White House Correspondents’ Dinner in April. Reps for Johansson and Penn declined to comment.