Remember back before "Guardians of the Galaxy" came out, when Chris Pratt said that really sweet thing about stealing his Star-Lord costume from set so that he could visit sick kids in the hospital?

Well, he wasn't joking about that.

A tweet from the Children's Hospital Los Angeles proved that Pratt is true to his word with this unbelievably heart-warming picture of the "Guardians of the Galaxy" star with a young patient.

Star Lord (@prattprattpratt) cheered up our patients by sharing #GuardiansOfTheGalaxy! Thanks for making them smile! pic.twitter.com/kVsZIToZ73

— Children's Hosp LA (@ChildrensLA) August 21, 2014

This is exactly the kind of thing that makes me happy that Chris Pratt is seeing huge success lately. He's clearly a talented, funny guy, but taking this extra step just to bring joy to a group of kids who have been through way too much puts him in a special (and too rare) category of stardom.

"Guardians of the Galaxy" is in theaters now.