The Coffee Shop by Rosaline Jay

Leena is down on her luck, living on the run while just trying to live a normal life. Which is difficult when your father is the King of Hearts.

While working her regular shift at the coffee shop, Leena suddenly finds herself staring down the barrel of an assassin’s gun until a couple of her regular, and very attractive, male customers rush to her rescue.
When Leena winds up stuck with Sebastian and Luke in a safehouse until they can determine which rival gang wants her dead, she begins to realize that maybe these two men are just what her life has been missing.

This book is intended for a mature audience.