Alien Enslaved: Rebellion III: Colony Earth

Willow Rebow was as straight-laced as they came. She thought she was behaving wildly just going to Vegas to watch the male dance review. But then she really got to watch the naked men dance when she got thrown into a breeding pen with an alien Hybrid--bred from two of the most dangerous, most powerful alien warriors the Sheloni had ever captured--the Hirachi and the Satren.

And as unnerving as that is, it pales beside the discovery that both the hybrid, Tarik, and the Hirachi war chief, Korin, want her.