Photo: Robert Pattinson and Kristen Stewart KissRobert Pattinson and Kristen Stewart were caught kissing in public on a busy street in Rio De Janeiro, Brazil, on Sunday.

Now, before anyone gets too excited, the kiss was for the honeymoon scenes for the new 'Twilight' film, 'Breaking Dawn,' which is being shot in Rio.

At one point in the scene, Robert rested a hand on Kristen's bottom in a show of familiarity, the Daily Mail reported.

The real-life couple is notoriously private about their relationship and have, on more than one occasion, gone out of their way not to be seen in public together.

However, Robert and Kirsten seem to be enjoying Rio, and were seen waving to fans from their hotel balcony and even performed a short dance.