There are several ways to pick up sex as a gentleman, without bullying, deceiving or overly destroying the lives of your potential partners. For someone in a hurry who does not know where to go...
DON'T have sex at all if you can manage it. Although prostitution can never be eliminated, it can be minimized... Young girls will not be dragged into the flesh business if demand is not there. Very few girls choose prostitution as a fulfilling career!