Crossing the Line by Rhonda Russell

Tanner Crawford—former Army Ranger, Southern gentleman, quintessential badass. Now a prized member of Ranger Security, Tanner once again has his work cut out for him, never more so than when he meets Rhiannon Palmer.

Stubborn, mouthy and straight-up sexy, she’s the most interesting woman he’s ever encountered and the hardest he’s ever had to try to resist.
Rhiannon’s on a desperate search to find a good friend, and hot-as-sin Will is the key. Despite the incredible chemistry between them, she’s got to keep her priorities straight… and her hands off of him. But Will learned a thing or two about strategy in the military and soon he’ll have her right where he wants her. In his bed…for good!