Sydney Sweeney as Cassie in 'Euphoria' Season 2 has taken her acting to another level. The character has been spiraling by the episode and with Nate (Jacob Elordi) and Maddy (Alexa Demie) shown to have feelings for each other again, she loses control and has a major meltdown. What stunned Twitter was the acting that Sweeney brought to the table.

Nate shows up at Maddy's birthday party and sees Cassie start drinking heavily. To further mess with Nate, she changes into a bikini and the group decides to do a hot tub session. Nate is asked about his relationship with Maddy where he denies and gets into an argument with her where she also reminds him about the time that he wanted to have kids with Maddy. At this point, Cassie pukes it all out. 

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"after this episode someone better cast sydney sweeney in a psychological thriller !!! #Euphoria #sydneysweeney," one of the tweets read. "#Cassie, baby what is you doing? #Euphoria #EuphoriaHBOMax," one of the fans asked after she had a meltdown at the pool during Maddy's birthday. "It cannot get worse for Cassie than it did this episode … #Euphoria," one of the comments read. "I wonder if Nate will break his fathers cycle and give up his quest for the tapes. Ex: If he really likes Cassie, actually be with her and treat her right. And leave leave Maddie alone #Euphoria #CalJacobs," a comment said.

Theories and opinions were part of the discussion as well. "Cassie is just horrible!! She just want nate,when did she start to obsess over him?? And she justify her wrong doings by " you two were broken up" #Euphoria." Another fan wrote, "just a bit of euphoria ep 4 rundown: the whole rue, jules, elliot thing is a damn mess, cassie threw up disgustingly in the hot tub, maddy and nate are still toxic, and most especially.. cal is a material gworl #Euphoria #EuphoriaHBO."

The episode also sees Cassie deliver a cathartic confession of sorts to Maddy in her drunken state. But how it all unfolds is anyone's guess. 

'Euphoria' Season 2 airs Sundays at 9 pm ET on HBO.