Eli by Delilah Devlin

An ex-SEAL sniper, who has spent his life experiencing everything from a distance, finds his self-imposed solitude challenged by the one woman in the world who might have been made just for him.
Eli Pope left the SEALs when he feared that he was losing his humanity. Now, he’s the latest new hire at the Dead Horse branch of the Montana Bounty Hunters. However, working with the tight-knit hunters hasn’t broken through his reserve. He’s still the man on the outside looking in.
Then a chance meeting with Sheriff’s Deputy Kira Ennis sets him on a new path, leaving him hopeful for a brighter future. She’s unlike any woman he’s ever met—independent, smart, brave, and strong in her own right. He begins to believe that she’s the one person in the world meant to end his loneliness, but he hesitates, wondering if it’s right to pursue her when she’s so much younger than he is.