Boerum Hill celebrity mascot Michelle Williams maybe isn't taking her ex's rebounding with Helena Christensen too well: She's getting all para on the F train! Says an observer: "I felt someone's eyes on me and it was her and then she looked away like I had been the one staring. Then she moved further down the car like I was going to attack her. Then when we both got off at our stop, she ran out like the devil was on her heels. She even looked back to see if I was behind her! Since when did Asian girls become scary?" Actually, since "The Grudge"?