Edward and Jacob get heated in this preview of our exclusive clip, which premieres this Sunday. By Eric Ditzian Robert Pattinson in “Eclipse” Photo: Summit Entertainment Last month, when we told you Robert Pattinson , Kristen Stewart and Taylor Lautner would be on hand at the MTV Movie Awards to present a never-before-scene clip from “Eclipse,” fans went wild trying to guess just what footage they’d get. Would it be the part where Edward Cullen proposes to Bella Swan? That much-hyped tent scene that co-star Elizabeth Reaser called a “chaste three-way” ? Well, the full clip won’t be unleashed until the Movie Awards this Sunday, but it’s just cruel to make you wait that long to find out what you’ll be getting on show night. So we pushed and we pulled, we twisted arms and engaged in activities that might be illegal in some countries — and voil
