Telling a girl seduction stories is a great method to attract her. In fact, I would argue it is one of the most powerful techniques when it comes to attracting girls. It is an effective way to turn them on and get them in the right mood.
In order to be successful in this seduction technique, it is essential that you already have built a bit of chemistry and comfort with her. This isn't something you would do when you first approach a girl. This is something that you do at a later stage, after the initial approach, the flirtation and the exchange of phone numbers. The best time to employ this method is probably during the first or second date with her.