Hookers : "You can stay if you want"
That was a pretty weird line for somebody who just blowed his client for money. What, she felt so lonely she wanted to socialize with him afterward ? Cup of tea might be ? I mean, you have to choose between the money or your relations honey. And what about the other clients, go back to work.
Also, it seemed to me he already had some kind of connection with another hooker at the beginning of the movie. She was playing a dangerous game.