The ‘Breaking Dawn’ lovebirds show so much affection while traveling from Canada to the United States!

Robert Pattinson and Kristen Stewart are usually pretty reserved in their romance, but new pictures show the pair so in love while passengers on a plane!

An eyewitness that was sitting behind them in business class spilled some details — as well as pics — from the August 2010 flight from Montreal to Los Angeles, where the pair was allegedly making out for “half of the trip.”

“They kissed a lot and they were holding hands,” the passenger said. “They seemed very close. They played games together on [an] iPad. Robert was reading a script. Kristen listened to music.”

What do you think, HollywoodLifers — are Rob & K-Stew the most in-love couple in the world?

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