Some of Hollywood's biggest stars are also the sweetest guys you'll ever meet — but which A-lister is the most chivalrous?

Celebrities often fall in love with other superstars — good thing these A-listers are guys with hearts of gold! From men who've loved their women for a long time like Robert Pattinson and Kristen Stewart to newer romances like Justin Bieber and Selena Gomez, these guys know how to treat their ladies right. Click through our gallery of these hot men and tell us, HollywoodLifers — which boyfriend treated his lady best in 2011?

Ryan Gosling is always such a gentleman to his new love Eva Mendes, whether traveling the world together or making hilarious viral videos!

Justin Theroux is such a down-to-earth companion for Jennifer Aniston — she's finally found a good man!

Nick Jonas may be young, but he has matured enough to be an amazing companion for his sexy older girlfriend Delta Goodrem!

Justin Timberlake has had a rocky road with his long-term girlfriend Jessica Biel, but it seems like he's now ready to commit to her for good!

George Clooney is an eternal bachelor, but it seems his heart has been rejuvenated by a new romance with the super-hot Stacy Keibler!

Robert Pattinson is such a fan of Kristen Stewart's professional efforts — he's too excited to see her new movie Snow White And The Huntsman!

Justin Bieber is so protective of Selena Gomez – including supporting her family after her mother's miscarriage.

Ryan Reynolds' romance with Blake Lively seemed like a brief fling at first, but now there is talk of an engagement between these sexy stars!

Brad Pitt is such a good father that Angelina Jolie KNOWS he's the one for her — even without a wedding ring!

Liam Hemsworth loves spending time with the people who matter most to Miley Cyrus — her family! The pics of this couple spending time together at Thanksgiving are too cute.

Some of Hollywood's biggest stars are also the sweetest guys you'll ever meet — but which A-lister is the most chivalrous?

Celebrities often fall in love with other superstars — good thing these A-listers are guys with hearts of gold! From men who've loved their women for a long time like Robert Pattinson and Kristen Stewart to newer romances like Justin Bieber and Selena Gomez, these guys know how to treat their ladies right. Click through our gallery of these hot men and tell us, HollywoodLifers — which boyfriend treated his lady best in 2011?

Ryan Gosling is always such a gentleman to his new love Eva Mendes, whether traveling the world together or making hilarious viral videos!

Justin Theroux is such a down-to-earth companion for Jennifer Aniston — she's finally found a good man!

Nick Jonas may be young, but he has matured enough to be an amazing companion for his sexy older girlfriend Delta Goodrem!

Justin Timberlake has had a rocky road with his long-term girlfriend Jessica Biel, but it seems like he's now ready to commit to her for good!

George Clooney is an eternal bachelor, but it seems his heart has been rejuvenated by a new romance with the super-hot Stacy Keibler!

Robert Pattinson is such a fan of Kristen Stewart's professional efforts — he's too excited to see her new movie Snow White And The Huntsman!

Justin Bieber is so protective of Selena Gomez – including supporting her family after her mother's miscarriage.

Ryan Reynolds' romance with Blake Lively seemed like a brief fling at first, but now there is talk of an engagement between these sexy stars!

Brad Pitt is such a good father that Angelina Jolie KNOWS he's the one for her — even without a wedding ring!

Liam Hemsworth loves spending time with the people who matter most to Miley Cyrus — her family! The pics of this couple spending time together at Thanksgiving are too cute.