Irresistible Chemistry (гет)

There's a fine line between acceptance and ostracism in the wizarding world--or the Muggle one. But sometimes you have to break all the rules and find your own truth. It'll never work, they said. Wizard and Muggle, Slytherin and Gryffindor. Pureblood and blood traitor. Yet sometimes the irresistible chemistry of the heart overrides everything.
Severus Snape and Lily Evans were next door neighbors and best friends, until they went to Hogwarts, where arrogant pureblood James Potter set his sights on Lily. But Lily, heir to a Seer's Gift, was staunchly loyal and slowly growing to have feelings for her best friend, who also was drawn to the fiery witch who shared his love of potions and understanding of his awful home life.
But James was used to getting what he wanted, and he thought he wanted Lily . . . until an incident that almost spelled disaster for him and his friends, Sirius Black, Remus Lupin, and Peter Pettigrew--showed him that maybe what he really wanted was someone who truly wanted to be part of his world, yet never could be--Muggle Petunia Evans.
An unusual Harry Potter Marauders era and beyond romantic tale.