From friends to lovers on tour: narry and one direction fiction

Liam's little brother Niall is going on tour with and his bandmates,Louis,Harry and Zayn and Harry and Niall at a party get drunk and admits he likes Harry he is the second youngest member of the band and start to date. Bear in mind some unexpected surprises may come
What will happen between them?
What will Liam and the fans think about this?
Niall is the youngest and is 15 and later turns 16 and this is set during take me home and midnight memories