Theodicy (Steter fic - Smutfree version)

It was a shock for Peter to find out that the seventeen-year-old teen was his true mate. It seemed like another cruel joke to Peter because Stiles was off-limits. Not only because he was still young but also because he didn't want Peter that way. At first, he was in love with Lydia and then Derek broke his heart. But, of course, in a perfidious, strange way, this suited his messed up life perfectly.
(This is not underage, don't worry)