Article continues below advertisementSelena Gomez gave a shout-out to her beloved costar Martin Short after the unexpected death of his daughter, Katherine Short.As the actress shared numerous personal photos on her Instagram Story on Wednesday, March 4, she included a black-and-white shot of herself, Martin and their other Only Murders in the Building costar Steve Martin sitting on set.Article continues below advertisement'I Love You Marty'Source: @selenagomez/instagramSelena Gomez showed her love for Martin Short after his daughter Katherine's suicide."My favorite guys.