How does Janet Evanovich use imagery in High Five?

Imagery:

"Joe Morelli is a plainclothes cop who has skills not covered in the policeman's handbook. A couple months ago, I let him into my life and my bed. A couple weeks ago, I kicked him out. We'd seen each other several times since then on chance encounters and arranged dinner dates. The chance encounters were always warm. The dinner dates took the temperature up a notch and more often than not involved loud talking, which I call a discussion and Morelli called a fight."