Turns out, they don't think Justin is much of a 5SOS fan.
They didn't talk to Justin at the party, it turns out, as Michael Clifford explained, "I think he hates us," adding, "It was f**king crazy, people standing on tables and s**t."
He also revealed some crazy inside scoop at the shindig, saying, "I probably shouldn't say this, but he had his own album on loop for, like, two or three hours."
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Gallery | Stars Who Have Channeled Their Inner Justin Bieber