The Key - Jo Morgan Sloan

Two high school sweethearts-one cisgender, one transgender, both men- find each other again in adulthood and have a second chance at love, but one of them doesn't know they've been in love before.

Tabby, a closeted trans boy in high school, resolves to come out after moving away for his senior year. He worries his boyfriend, Jax, will reject him over the truth and doesn't share his trans status. On their final date before Tabby moves, still passing as female, he and Jax agree to break up over the distance and promise to give their love a chance if they find one another again.

As an adult, Jax moves to San Francisco in search of a clean slate. Tabby, living in the same city, fills his life with friends and hosts an LGBT D'D group; however, his boyfriend Rob is a poor match for him. When Jax joins Tabby's D'D group by chance, the two are thrust together again and become fast friends, yet Jax doesn't recognize Tabby because of his advanced transition.

Jax becomes Tabby's unofficial confidant and helps Rob be a better boyfriend behind the scenes to satisfy his growing attraction. With every day that Tabby hides the truth-that he is Jax's missing first love-he risks losing both Rob and Jax to his lies.