Steve Martin poked fun at his Only Murders in the Buildings costars Meryl Streep, 75, and Martin Short, 74, adding fuel to the fire that the two are an item. On Friday, October 18, the 79-year-old comedian shared a screenshot on Instagram featuring a photo of himself, Streep and Short. The picture, which was originally taken at an after-party for Broadway’s Pictures From Home in February 2023, had Martin’s own face crossed out with an emoji, leaving the duo visibly shown. The amusing post sent fans into a frenzy. “Did he just hard launch the relationship?” one fan commented, while another quip…