Female Inversion - Deena and the Professor, #6

On her first day of college, Deena met the man of her dreams-her Psychology professor! He took control of her fantasies, showed her how to SUBMIT, captured her first experiences and made a contract with her to teach her all the ways of PAIN AND PLEASURE. Deena's nervous; she wants to explore more, but she also wants to keep Professor Sturm for herself. This time he's bringing another partner into the bedroom, a woman, so that Deena can have her first lesbian experience.
But the woman is also the professor's ex-wife, Stacy. What if Stacy tried to get her man back? Or will a night with Stacy be so amazing, that Deena changes her mind?It's a lot for someone so INEXPERIENCED to consider.(Part Six of a ten part series; Parts One through Five have been bundled, and then Parts Six through Ten will be bundled as well. Notice for BDSM, girl on girl action, and multiple partners.)