Just watched the proposal yesterday and it was really funny! I am now looking for similar books! They don't have to be boss and employee...I just like the fact that everyone thinks she is a witch when in all reality she puts on her hard shell for a reason.....

There's a book by Jessica Hart that kind of fits this theme:   Wife to Be.   The heroine is described as "prickly" when in reality she's recovering from a bad breakup, and the hero wants to remain independent, but, circumstances make them have a pretend engagement.   (The heroine works as a chef at the hero's bank.)  They spend a lot of time being sharp with each other while fighting their attraction.   It's lightweight, but a good read.