Jason North is the lead guitarist for Mullerin, a rock band he's formed with his old school friends. After years of touring, Mullerin is now semi-successful, and Jason has escaped what he's always dreaded, being poor, obscure, and alone. He's done everything he thinks he should, or rather, everything society considers proper for a successful young man. He's married and settled down. He's satisfied with his life, or thinks he ought to be.

Then he runs across the dark secret of his past, a secret he thought he had buried two years ago. He encounters his ex—namely, his ex-boyfriend, and his life implodes. Old desires can never truly be laid to rest.

His Ex-Boyfriend is set in the same world as Undone by Beauty, Crossing Dreams, and The Wedding Night.