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Blake Lively and Ryan Reynolds

Photo credit: c.Warner Br/Everett/Rex Features

Kim and Kanye hit the red carpet for their second date night in a row at the Tribeca Film Festival Arts Dinner in April 2012. 

Kim Kardashian and Kanye West get snapped by the paparazzi.

Kanye and Kim are ready for action

Kristen Stewart and Robert Pattinson

On and off-screen couple -  Kristen Stewart and Robert Pattinson snuggle up as they arrive at The Twilight Saga: Breaking Dawn - Part 1 première in Los Angeles. 

Credit: Matt Baron/BEI/Rex Features

Jennifer Lopez and boyfriend Casper Smart

Jennifer Lopez and Casper Smart - still from Dance Again video - April 2012

Celeb couple JLo and hubby Marc Anthony cuddle for the camera

Prince William and Catherine, Duchess of Cambridge attend the UK Royal Premiere of "African Cats" at the BFI Southbank on April, 25 2012 in London, England.

Kate and Wills glow as they announce their engagement.

William and Kate make a 2011 appearance

Glee stars Lea Michele and Cory Monteith cuddle up

JLS' Marvin Humes and The Saturdays' Rochelle Wiseman get engaged

Marvin and Rochelle get close on the red carpet.

Ahh... young love.

Rochelle Wiseman took her boyfriend, JLS Marvin, along to the Vivienne Westwood show in 2010. We're still speculating in 2011 - are they or aren't they?

Justin Bieber and Selena Gomez in their first public event together

Justin Bieber and Selena Gomez on a day out in 2011.

Beyonce and Jay-Z

Derek and Cheryl aren't an official couple, but they sure do have lots of chemistry.

Cheryl Cole and rumoured boyfriend, Derek Hough

Brad and Angelina say that they'll get married when the US extends the right to gay people, too.

Pink and hubby Carey Hart.

Hollywood's most controversial couple go out on the town.

The rockin duo have stuck it out through thick and thin.

Ashlee and Pete broke up in early 2011 but remain friends.

Ashton Kutcher and Demi Moore share a laugh.