Brothers bestfriend

Addison is Masons younger sister by 2 years. He hasn't seen her in over a year after she went travelling.
A decision based off of a mistake made with the one person she knew was off limits... Declan. Mason's best friend from 6, while growing up he was Addi's best friend too.
It's a shame it all changed that one night.

What will Mason say?
Will they realise that along the way the thought of being together is better than actually being together? Are they better off apart?

Not all of the football events, timelines and results will be accurate a lot of them is fictional