UNIVERSAL CITY, CA - JUNE 06: Jennifer Lopez performs onstage at the 2010 MTV Movie Awards held at the Gibson Amphitheatre at Universal Studios on June 6, 2010 in Universal City, California. (Photo by Christopher Polk/Getty Images)

We loved watching Javier Bardem and Penelope Cruz fall in love on the big screen in the award-winning film Vicky Cristina Barcelona. The handsome pair has since been married and had a baby!

From the when they first started working on the Twilight film series, Robert Pattinson and Kristen Stewart fell hard for each other -- and have since been inseparable. Kristen, 21, and Rob, 25, have now been together for more than two years, but continue to keep their relationship out of the spotlight as much as possible.

Confidential: The Life of Secret Agent Turned Hollywood Tycoon Arnon Milchan tells the story of Arnon Milchan, who watched Brad and Angelina fall for each other as they began to work on the action movie, Mr. & Mrs. Smith. "Milchan introduced Pitt to Jolie and immediately sensed that there was a spark between them," the book reads. "A passionate romance ensued, with one slight problem . . . Pitt was married to [Aniston] . . . when Aniston kicked Pitt out of the house, all hell broke loose."

Nina Dobrev and Ian Somerhalder are one of the most mysterious couples we have in Hollywood! Largely because they shoot their show, The Vampire Diaries, outside Los Angeles, we rarely capture these two leading actors showing off any PDA. Nevertheless, sources tell us Nina and her man are very happily in love.

Sadly, Shia LaBeouf and his Wall Street co-star Carey Mulligan are no longer together, but their relationship was special and strong -- neither said anything in the press about the other unless it was positive. They both bonded from their laid back and down to earth personalities.

Since co-starring in High School Musical more than five years ago, Zac Efron and Vanessa Hudgens were the quintessential on-screen/off-screen couple. Sadly, the couple called it quits and Vanessa has since moved on with Josh Hutcherson. That said, we wouldn't be surprised if they ended up back together sometime in the future...

Anna Paquin and Stephen Moyer are still going strong -- on AND off the screen. The True Blood lovers met on set and have since tied the knot in a laid back summer wedding last year. The couple flies under the radar and lives in Venice Beach, Calif.

Despite a brief break up earlier this year, Miley Cyrus and Liam Hemsworth are still going strong since meeting and falling quickly in love while shooting The Last Song.

We love watching couples on-screen fall in love and become real life lovers! Who is YOUR favorite on and off screen pair?

New details about the beginning of Angelina Jolie and Brad Pitt's hot and heavy affair have now surfaced -- and it just made us realize how much we love hearing how on-screen couples fall for each other in real life too! From Angie and Brad, to Robert Pattinson and Kristen Stewart, here are eight of our favorite on-screen, turned off-screen lovers!  Which pair do YOU relate to most?

UNIVERSAL CITY, CA - JUNE 06: Jennifer Lopez performs onstage at the 2010 MTV Movie Awards held at the Gibson Amphitheatre at Universal Studios on June 6, 2010 in Universal City, California. (Photo by Christopher Polk/Getty Images)

We loved watching Javier Bardem and Penelope Cruz fall in love on the big screen in the award-winning film Vicky Cristina Barcelona. The handsome pair has since been married and had a baby!

From the when they first started working on the Twilight film series, Robert Pattinson and Kristen Stewart fell hard for each other -- and have since been inseparable. Kristen, 21, and Rob, 25, have now been together for more than two years, but continue to keep their relationship out of the spotlight as much as possible.

Confidential: The Life of Secret Agent Turned Hollywood Tycoon Arnon Milchan tells the story of Arnon Milchan, who watched Brad and Angelina fall for each other as they began to work on the action movie, Mr. & Mrs. Smith. "Milchan introduced Pitt to Jolie and immediately sensed that there was a spark between them," the book reads. "A passionate romance ensued, with one slight problem . . . Pitt was married to [Aniston] . . . when Aniston kicked Pitt out of the house, all hell broke loose."

Nina Dobrev and Ian Somerhalder are one of the most mysterious couples we have in Hollywood! Largely because they shoot their show, The Vampire Diaries, outside Los Angeles, we rarely capture these two leading actors showing off any PDA. Nevertheless, sources tell us Nina and her man are very happily in love.

Sadly, Shia LaBeouf and his Wall Street co-star Carey Mulligan are no longer together, but their relationship was special and strong -- neither said anything in the press about the other unless it was positive. They both bonded from their laid back and down to earth personalities.

Since co-starring in High School Musical more than five years ago, Zac Efron and Vanessa Hudgens were the quintessential on-screen/off-screen couple. Sadly, the couple called it quits and Vanessa has since moved on with Josh Hutcherson. That said, we wouldn't be surprised if they ended up back together sometime in the future...

Anna Paquin and Stephen Moyer are still going strong -- on AND off the screen. The True Blood lovers met on set and have since tied the knot in a laid back summer wedding last year. The couple flies under the radar and lives in Venice Beach, Calif.

Despite a brief break up earlier this year, Miley Cyrus and Liam Hemsworth are still going strong since meeting and falling quickly in love while shooting The Last Song.

We love watching couples on-screen fall in love and become real life lovers! Who is YOUR favorite on and off screen pair?

New details about the beginning of Angelina Jolie and Brad Pitt's hot and heavy affair have now surfaced -- and it just made us realize how much we love hearing how on-screen couples fall for each other in real life too! From Angie and Brad, to Robert Pattinson and Kristen Stewart, here are eight of our favorite on-screen, turned off-screen lovers!  Which pair do YOU relate to most?