Explosive Heart

Cath and Levi were best friends and had been ever since Levi gave her his sloppy saliva covered lollypop to stop her crying when her doll got paint in its hair.
They were so close that sleeping in underwear and the same bed was normal.
Every time Levi’s sister Eleanor and her boyfriend started arguing he would traipse over to Cath’s house and stay the night.
What happens when one starts to feel something for the other, but they have their eye on someone else?
Will they work it out, or is their friendship destructive?