By the time you’re reading this article, Robert Pattinson will have wrapped his final scene for “Breaking Dawn: Part 2.”   In a way, he’s breaking up with his ethereal BFF.   “It does feel like a breakup. I do love the guy — and I’m going to miss him,” Pattinson, 24, says during an interview with the Sun-Times on a cool Sunday afternoon from his hotel suite in Santa Monica, Calif. “I prefer…