So Tempting by Jody A. Kessler

District Ranger Cormac Fallon isn’t only a career driven, hot, and mature firefighter… he’s also Tawny’s new boss.
Tawny Brooks, forest ranger and general goofball, knows how much trouble her spontaneity has caused in the past, but flirting with her boss is so tempting and too easy.
Cormac needs to lighten up and his emotional walls need torn down. Spending one night with her boss – no strings attached – couldn’t hurt, could it?
While camping, Tawny meets Elliot, a gorgeous and entertaining Marine who’s perfect in every way and she can’t resist indulging in some weekend fun.
But spending time with Elliot makes Tawny question her feelings for Cormac.
After returning to work, Tawny discovers Elliot has a direct connection to Cormac and he is now off limits. Tawny’s job becomes hopelessly compromised.