Actors and BFFs Mr. Holmes."

On Wednesday, Stewart attended the London premiere of the flick to his longtime pal, and ended up performing some serious PDA with his fellow actor. The twosome embraced on the red carpet (which was really a cobblestone walkway), and then locked lips, delighting Stewart's wife, Sunny Ozell, as well as McKellen's costars and the fans and media that gathered for the event.

It's heartwarming to see two men share their platonic love for one another so openly (even if that love is X-Men" costars, and here's to many more years of their awesome bromance.

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