Robert Pattinson, Kristen Stewart's Roller Coaster Relationship

Paula Faris reviews "Twilight" stars first interview since their reunion.
3:00 | 11/02/12

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Transcript for Robert Pattinson, Kristen Stewart's Roller Coaster Relationship
Robert pattinson and kristen stewart giving their first night, since all of the news since their breakup and reunion. But are they back together? Paula faris takes a look at what the stars didn't say, but their body language did. Reporter: Hollywood's most publicbreakup, became the most awkward television reunion. Every movie culminates with some kiss of some kind. Reporter: On-screen co-stars and former real-life couple, along with taylor lautner, sat down with "entertainment tonight" and mtv, promoting their latest film. And talked about their on-screen love scenes. The worst was when he was like, we want to be inside of the experience. For your close-up, you're not going to be looking at rob. You're going to be looking into the lens. There's no way it's going to look mind-blowing or even vaguely attractive. Reporter: In their first press appearance together, since stewart issued a public statement in july, admitting she cheated on pattinson, caught on camera, kissing director rupert sanders. What's the biggest difference of doing this last film compared to this one? I felt more free in the first one. Reporter: For the most part, the pair ducked questions about their relationship, until they were asked about this. An apparent date together on halloween. We have a photo of you guys. Oh, yeah. I look awesome. Reporter: We asked body language expert, dr. Lillian glass, to watch the video for clues about their relationship. She can't come up with a straight answer. My favorite scene in the second part of "breaking dawn," is probably when he takes his clothes off in front of my father. She was rocking her body back and forth. Playing with her hair. Crossing her body. She did not want to be there. Reporter: The couple are reportedly an item again. And while neither side will comment about the status of their relationship, there's no denying their on-screen chemistry in this trailer. You guys really look great together. Reporter: For "good morning america," paula faris, abc news, new york.

This transcript has been automatically generated and may not be 100% accurate.

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