By Jen Heger - Breaking Celebrity News Assistant Managing Editor

Robert Pattinson and Kristen Stewart are legally required to promote the final installment of the Twilight movie saga, Breaking Dawn Part 2, together, and if their "reconciliation" doesn't last the actors will be stuck with each other on the international press junket, Breaking Celebrity News is exclusively reporting.

"Rob and Kristen are legally required to promote Breaking Dawn Part 2 together along with the rest of the cast," a source close to the situation tells Breaking Celebrity News exclusively. "Their individual contracts have very specific language about what is legally required of Rob and Kristen to do on the publicity tour. The studio execs at Summit weren't happy when Rob and Kristen broke up, but this is why there are clauses about what is required of the stars to do. The promotional tours of the past Twilight movies are very much anticipated by the fans and almost becomes bigger than the movie."

As previously reported, Kristen's mom Jules has been working overtime to get her daughter back together with Robert after a summer of estrangement in the wake of her affair with married director Rupert Sanders.