Chris Evans and Robert Downey Jr. just had a Marvel-lous Twitter exchange

Twitter undeniably has a whole bunch of uses. 

But helping us fill the gaping void between Avengers movies by providing a space for our favourite superheroes to cheerfully tweet at each other is surely one of its finest achievement.

SEE ALSO: Chris Evans being charming is the Oscar moment of our swoon-y dreams

On Wednesday evening, Robert Downey Jr. — aka Iron Man — posted the following, beautifully captioned image of two well-known toy figurines sheltering beneath a rain of fire.

And a few hours later, Captain America himself responded.

When will these two stop being adorable?