I'm going to do a parody music video with two female models tomorrow. The parody has a sexual tone to it. Is it a very bad idea to invite them for a drink and try to see where it goes after, and only after the video shoot? I remember BD talking about not mingling work life and sex life. But I'm unsure if this would be off-limit as I'm not going to work with them regularly, yet I do pay them for their work. PS: I'm going to have a model agreement signed with them.