‘Of the four of them, only three remained. And there was no going backwards from there.’Emily and Josephine have always shared everything. They’re sisters, flatmates, and best friends. It’s the two of them against the world.When Emily has the perfect wedding, and Josephine finds the perfect man, they know things will change forever. But nothing can prepare them for what, or who, one of them is willing to give up for love.Four people. Three couples. Two sisters. One unforgiveable betrayal.