Not sure if you solved this already, but for future references since a lot of people seem to have this problem.
Just for the record: I'm not to found of the idea of spending the night with the prostitutes either. It's not really my idea of having a good time, not even in a computer game, so I hope this will get anyone who want to skip that part off the hook(ers). I'm not asuxeual though, it's just not my thing.
So, a few hints on how to get what you need and at same time trying to keep the fun spoiling to a minimum: