Garrett by Riley Edwards

Former GRS Operator and Navy SEAL Garrett Davis is the walking, talking definition of regret. His guilt weighs heavy. The pain and misery he carries cripples him. When a tragic accident takes him back to his hometown, he’s not prepared to face the woman he left behind. The woman who should’ve been his—was his, until he broke her heart.
Mellie doesn’t have time for Garrett to strong-arm his way back into her life. She doesn’t want to remember all the ways he loved and protected her when they were children. It’s not easy to dream of a life full of love when your high school sweetheart dumps you before you make it down the aisle. She’s long ago given up on happy endings. Besides, all thoughts of happiness evaporate when your sister is murdered but the police don’t believe you.
But what she wants and what she needs are very different when her sister’s killer turns his attention on her.
Garrett has one shot to protect the woman he’s loved since they were kids. One shot to heal two broken hearts. One chance to prove their future is worth fighting for. Garrett’s redemption won’t come easy; Melissa Rivers is not the same girl he broke.

Spoiler alert: he fails. So he does what he figures any man who is faced with losing everything does—he kidnaps her and takes to the only person he knows who can help him—Zane Lewis.