After she chose Dauntless and found herself tangled in Jeanine Matthew's plots to control the city, 16-year-old Tris Prior faces most of her fears. However, there is still one fear that she hasn't faced yet. Sex. In this fan fiction, Tris faces her biggest fear of sex and looses her virginity to her one true love, Tobias. The fan fiction takes place immediately after Insurgent and before Allegiant. Read Tris's experience as she looses he virginity and becomes 'Five' instead of 'Six'! ***(This fanfic was formerly known as 'Four and Five' but I have renamed it to '50 Shades of Tobias as of 1/19/14)***