His Untamed Heart by Sweetblunch - Mass Market

Willow Kinsella is on the verge of losing her family's ranch. Her only option to save it is to sell the property to their neighbor, which would have been great had the buyer been literally anyone else other than her jerk ex-boyfriend.
Enzo Fiorenza is searching for his place in the world. Literally. After an accident that left him stranded in another continent, he wakes up with no memories of his life, his career as a soldier, his extraordinary family, and the birthright that he has tried to run away from all his life. Now that he is estranged from all that, he is desperate to get back.
But by fortunate happenstance, Willow finds Enzo at the site of his crash and nurses him back to health. Unbeknownst to both of them, they each have the very things the other has been searching for—if only they would let loose their untamed hearts.