Wildfire Sweethearts

This is an Apple Books audiobook narrated by a digital voice based on a human narrator.
Reunion Under Fire 

Eight months after their broken engagement, Tessa Carpenter is reunited with the man she could never forget—in the same wildfire-fighting unit and now as her boss. With the mystery of why he ended their relationship still between them, Tessa's not looking forward to working under Sean Nash. Sean promised to take care of his late friend's sister. That meant walking away, sparing Tessa from his guilt over the accident that killed her brother. But working beside Tessa reignites the embers of his memories, fanning them into love once more. And forcing Sean to decide: bolt again…or stay and fight for the woman of his dreams.