There's a lot of comments about saying that prostitution is not a bad thing which is in part right but most of the prostitutes are being coerced to do that. In my country most of the prostitutes are immigrants that were lend money and when they arrive here they have to pay that money back...
I think calling her a slut is about to much, she is being used by male for having sex and then dump her which is the reason she have a twisted thought of what a real relationship is.