Professor's Last Time by Matthew Dyne
Willow, who has just entered college, does something that goes on all the time at her university. She knows other girls who did it, but until she had to, she swore she never would. She offers sex to her math professor in exchange for a grade. He isn't nice about it – he refuses to use a condom, and he wants to take Willow home with him
The conversation with her professor brings up memories of a relationship that Willow had with Robbie, her best friend’s thirty-six- year-old uncle. It was during that relationship that Willow learned that she liked being tied up and used.
This short story anthology tells the story of Willow's sexual escapades from her first time, to the Professor's last time.