In SUGAR, a couple embarks on a relationship that starts off as more of an arrangement, but ends with them falling in love—at a cost. Neither has ever done anything like this before, and the emotional swings they face threaten to undo what could be a perfect match in this companion book to both SUNSTONE and SWING.

Spinning off from the universe of SUNSTONE comes a slice-of-life romantic story about a couple trying to regain the sexual energy from the beginning of their relationship by swinging with other couples. An emotional journey of two people fighting to stay in love.