Where a naive girl with lots of baggage and a rockstar that can't seem to think of anyone but himself fall in love over the span of 24 hours

Calum Hood is in love his best friend but only two band members know. Will Calum tell her how he feels? What happens when 5SOS spends 3 months in London and he still hasn't told her? By the time Calum comes back to Australia he wants to tell her. Will he or will another band member stand in the way?