Spur of the Moment (Bell Buckle) by Karley Brenna

Coming home was supposed to be temporary, but this time, he isn't letting her go.
Lettie Bronson thought that running from her problems was the only way to find happiness and avoid risking losing the one person who meant the most to her. But running didn’t solve a single thing, and when she returns to her family’s ranch in Bell Buckle, she has no intent on staying. She’s only there long enough to figure out where to land next. But one road trip later, she’s convinced she doesn’t know what she wants. Bailey Cooper has always given more of himself to the two ranches he works on than his personal life, but one thing he knows for sure: Lettie is the girl he’s going to marry. When she leaves without a goodbye the day after her eighteenth birthday, he’s convinced he’ll never see her again. That is, until she’s falling off a ladder and into his arms. Even after five years, he’s still lost in those baby blues of hers, and falls impossibly harder after a few days alone with her. But coming back to Bell Buckle doesn’t mean she’s here to stay. She left once already, what was stopping her this time?