She may seem like a sweet girl, but she just might be waiting for you to tie her down and spank her with a paddle, or would love to have sex on a waterbed. What would be great is if she told you these sexual fantasies, but in most relationships that never happens. First, understand that we, women, fantasize a lot. A nd despite of all our uniqueness, there are several common sexual fantasies that many of us dream of. The name of the game depends on your relationship with the woman. If she is your long time girlfriend — This is when you should start to bring sexual fantasies into the mix. Also, since you already know her, she may have mentioned some of her sexual fantasies already, or shot out some hints.