Nina Hartley's Guide to Couples Sexploration DVD. First Lady of Adult Entertainment, Nina Hartley, shares her sexiest secrets for couples! Fantastic foreplay get your lover totally turned on. Follow her tantalizing tips to keep the lust alive in long-term relationships and to keep monogamy from meaning monotony. Staying power ignite the flame and keep it burning for hours. Starring: Nina Hartley, Shayla LaVeaux, Anthony, Runninghorse, and Joel Lawrence.