Since the moment they met at age 5, Rosie and Alex have been best friends, facing the highs and lows of growing up side by side. A fleeting shared moment, one missed opportunity, and the decisions that follow send their lives in completely different directions. As each navigates the complexities of life, love, and everything in between, they always find their way back to each other - but is it just friendship, or something more?
Lily Collins
as Rosie Dunne
Sam Claflin
as Alex Stewart
Christian Cooke
as Greg
Tamsin Egerton
as Sally
Suki Waterhouse
as Bethany Williams
Jaime Winstone
as Ruby
Art Parkinson
as Gary Dunne
Jamie Beamish
as Phil
Lorcan Cranitch
as Dennis Dunne
Ger Ryan
as Alice Dunne
Lily Laight
as Katie (12 yrs)
Rosa Molloy
as Katie (5 yrs)
