Ever since Zac Efron signed on to be in The Greatest Showman on Earth with Hugh Jackman, the two costars have been building quite the bromance. Hugh and Zac hit up a Jets game together in early October, and a few weeks after that, Hugh serenaded the Baywatch star on his birthday. They took their friendship to The Great White Way on Saturday night, where they watched the musical Waitress at the Brooks Atkinson Theatre in NYC and later mingled with cast members Jessie Mueller, Caitlin Houlahan, and Keala Settle. "With @zacefron after watching the enormously talented cast of @waitressmusical," Hugh captioned the group snap on Instagram. "If you get a chance — grab a ticket!" Hugh recently joked about losing his other BFF, Ryan Reynolds, to Conan O'Brien after the pair re-created a passionate kiss from The Notebook, so we'll sleep soundly knowing Zac has stepped up as a worthy replacement.