Throughout their relationship, Kristen and Robert have dressed up — and cuddled up — at many red carpet events while promoting Twilight, sharing plenty of sweet kisses on and off the screen. Click through to see the couple's most romantic snaps now.

So sweet!! Rob and Kristen have 6 years worth of great pictures together and memories! Here's to the next 6!!!!! Happy Birthday Kristen! 22 is over and done with and somehow you have taken the good times and bad and come out stronger and better than ever! 23 is a lucky number and I wish you lots of love and luck! To the future.

so sad what she had become.love this girl before both Rob and her. so much admiration for both of then but in the end she showed her true color.she is just an immature stupid girlfriend who had no respect for other people wife and marriage.whatwas she thinking when she was kissing Rupert inside her mini cooper.

Happy birthday Rob!! I'm so glad Robert & Kristen have some time together in London this week to celebrate Rob's birthday Sunday!! One of my most favorite simple, humble, and mature young hollywood couple as of today! GOD BLESS u both;)!!!

@1409609
That was so sweet of you I to am an aries and your right they are the one of the most beautiful couples in the world in fact I can't think of anyone that could even compare. I wish them all the luck in all the do also. It is sure nice to know that there is someone out there that feels the same way about them as I do and not afraid to admit it.

Kristen & Rob are such a beautiful couple they fit together so well I wish them both the best in all they do,
and I also would like to see them marry that would just be the greatest and most wonderful thing ever.
good luck to the both of you.

Happy 22nd Birthday Kristen,You and Rob go and do something very special or just stay home and love each other the way you do...I'm a Aries too and I always loved my birthday for no special reason,I guess it was just the fact that I was born..You two are one of the most beautiful couples in this world...Love and Happiness always..Peace and prayers to you Kristen and again Happy Birthday...KLE

happy birthday Kristen,,wish you all best,may you live a long and happy life..!!!
so many reasons why i love her so much.evev she has everything she was still a women of great humility.always humble and down to earth.
she's beautiful,sweet,funny,honest,and not fake.and above all she's got a man that simply adores her.

happy birthday Kristen,wish you all the best,may you live a long and happy life..!!!
so reasons why i love her so much.even she has everything she was still a women of great humility.
shs's beautiful sweet,funny,honest,and not fake.and above all she's got a man that simply adores her.

happy birthady Kristen,wish you all the best,may you live a long and happy life.!!!
so many reasons why i love her so much,even she has everything she was still a women of great humility,always humble and down to earth.
she's beautiful,sweet,funny,honest,and not fake.and above all she's got a man that simply adores her.

happy birthday Kristen! wish you all the best,,may you live a long and happy life.
so many reasons why i love her so much,even has everything she was still a women of great humility,always humble and down to earth.
she's beautiful,sweet,funny,honest,not fake and above all she's got a boy that simply adores her.

happy birthday Kristen..! Wish all the best,may you live a long and happy..
so many reasons way i love her so much.even she has eveything,she was still a women of great humility,always humble and down to eart.
she 's beautiful,cute,funny,honest,not fake.and above all she's got a boy that simply adores her.

happy 22nd birthday kristen! Look at her now, she's a woman as rob had said. a drop-dead-gorgeous woman that is :) kristen, hope you do know that your millions of fans love you. more success for our beloved kstew and more yaers with rob. teehee! WE LOVE YOU KRISTEN JAYMES STEWART!