5 Seconds of Summer on Their 'Special Connection' 10 Years Later (Exclusive)

5 Seconds of Summer chats with ET's Denny Directo about their latest single, 'Complete Mess' and how they found 'freedom' in self-producing and writing their new music. 5SOS also reflects on how they've grown as artists -- and friends -- 10 years since their debut album. Plus, Luke clears up marriage rumors sparked by his TikTok.