Robert Pattinson and Kristen Stewart have been playing Bella and Edward since 2008. That's the on-screen coupling that makes the most money!

Forbes made a list of the movie pairs who've made the most money at the box office over the last 3 years, and Rob and Kristen were crowned the winners.

Bella Swan and Edward Cullen have made more than $1.17 BILLION thanks to the Twilight saga.

Actually, Rob is on the list twice - he's also on there at #10 for his part in Water for Elephants with Reese Witherspoon.

Miley Cyrus and Liam Hemsworth come in at #8 for The Last Song.

Here's the list of the top ten highest-grossing movie couples from the last 3 years:

1. Robert Pattinson and Kristen Stewart - $1.17 billion (three "Twilight" movies)
2. Channing Tatum and Rachel McAdams - $125 million ("The Vow")
3. Jennifer Aniston and Adam Sandler - $103 million ("Just Go with It")
4. Sarah Jessica Parker and Chris Noth - $95 million ("Sex and the City 2")
5. Julianne Moore and Steve Carell - $84 ("Crazy, Stupid, Love.")
6. Amanda Seyfried and Channing Tatum - $80 million ("Dear John")
7. Natalie Portman and Ashton Kutcher - $71 million ("No Strings Attached")
8. Miley Cyrus and Liam Hemsworth - $63 million ("The Last Song")
9. Zac Efron and Taylor Schilling - $60 million ("The Lucky One")
10. Robert Pattinson and Reese Witherspoon - $59 million ("Water for Elephants")

Source: Ace Showbiz