Sir Ian McKellen sent the sweetest birthday video to his best friend, Sir Patrick Stewart, and it's giving us all the feels.

Keep scrolling to check it out...

Out of all the bromances out there...

via: Getty

Sir Ian McKellen and Sir Patrick Stewart's has to be the sweetest.

But before we get into our heartwarming story...

via: Getty

Let's recap a few things first.

Sir Ian McKellen is best known for playing Gandalf the Wizard in The Lord of the Rings trilogy.

via: IMDB

The eighty-one-year-old British actor has become somewhat of a legend in the film industry and he's lived a very impressive life.

He was knighted by the Queen in 1991 for his services to the performing arts...

via: Getty

And since 1988, McKellen has been openly gay and he has done an awful lot for the LGBTQ+ community.

McKellen has campaigned strongly for gay rights for years now...

And he has become a big figure in gay scenes all around the world.

And as for Sir Patrick Stewart?

via: Getty

He is also another incredibly respected British actor who has made quite the name for himself over the years.

Stewart rose to fame in X-Men and Star Trek...

And in similarity to his friend, he was also knighted by the Queen for his services to drama.

Stewart is one of the most iconic British actors out there...

via: Getty

And he is known for his humble and kind nature behind the cameras.

So, how did the 2 actors meet?

via: Getty

McKellen and Stewart met on the set of X-Men in 2000 when they had adjoining trailers.

They formed an instant bond...

Stewart told Wired earlier this year: "On those kind of movies, you spend more time sitting in your trailer than you do in front of the camera. So, Ian and I hung out together, drinking tea - and maybe in the afternoon, something a little stronger - and we got to know one another. And the charm of it was that we found that we had so much in common."

Since then they've become seemingly inseparable...

They regularly appear on Red Carpet events together and they're always photographed hanging out at the local pub.

McKellen even performed the marriage ceremony for Stewart and his wife back in 2013...

via: Getty

Now that's a real friendship!

It is truly heartwarming to see the pair's friendship...

And nothing seems to have changed between them over the many years they've known each other.

In more recent times...

via: Getty

McKellen did the sweetest thing for his best friend's birthday.

Sir Patrick Stewart turned eighty-one yesterday...

via: Getty

So McKellen decided to record him an amazing birthday message for the entire world to see.

He recited a sonnet for his old friend...

via: Instagram

Sharing McKellen's efforts, Stewart wrote: Sunny and my team took over for my birthday, and arranged this gift for today's reading: Sonnet 81 by @IanMcKellen. Thank you, dear Ian. #ASonnetADay."

When McKellen finished reading the moving sonnet...

via: Instagram

He looked into the camera with a smile and said: "And a very happy birthday, dear Patrick. Lots of love, Ian."

The video quickly went viral...

And fans gushed over the kind gesture that McKellen made for his dear friend.

True friendship can last a lifetime...

And Stewart and McKellen are solid proof of this!

Watch McKellen's lovely video here...

And a big happy birthday to Sir Patrick Stewart! For more celebrity birthdays, keep scrolling to see how incredible Vera Wang looked on her seventy-first birthday...