Toward the end of the play (and the episode), Ethan as Nate finds himself at the center of a very homoerotic scene in the locker room that features a choreographed dance (including a lot of grinding, humping, and generally salacious behavior) to "Holding Out For a Hero" by Bonnie Tyler.
This particular scene has been the subject of debate. While some fans interpreted it as commentary on locker-room culture and what a boys' locker room sometimes looks like due to toxic masculinity, others felt the scene is a pointed statement meant to out Nate as queer (which would not be OK on Lexi's part if it is the case). While viewers have long questioned Nate's sexuality since he frequents gay dating apps in season one and has a collection of penis pictures on his phone, it's hard to know how Lexi would have been privy to these intimate details of Nate's life that would clue her into this possibility. Since Maddy has tried to get Nate to acknowledge that sexuality is on a spectrum and he may be into guys, it's possible she or even Cassie said something that made its way to Lexi's ears.
Nate storming out of the auditorium and telling Cassie that the scene from the play was "homophobic" suggests that even if the scene wasn't specifically directed at Nate, he took it to be about him.
