Sirius Black doesn't believe in love. That is, until a potions accident leads to some unexpected side effects...

Sirius didn't believe in love because he had never been loved. He hadn't grown up with examples of what a loving relationship could look like. His friends, Peter, James, and Remus, were the best mates he could ask for, but their friendship was based on loyalty and respect. Sure, he would die for them, because that's just what you do for a friend.

Sirius isn't the only one affected by the potions accident! Severus, Regulus, James, and Remus have found their soulmates, too.