Newt and Credence are happily married, but a law is passed where they have to take on a third spouse. Enter Percival Graves, who was perfectly content to remain a bachelor despite the terrible loneliness. Both Newt and Credence think Percival is absolutely gorgeous, but they vow to make sure they keep their relationship with each other in tact. The marriage happens and true to their word, Newt and Credence are as loving with each other as they have always been. They just might have been a little too successful, as Percival feels like a complete outsider. He wants to get to know his husbands, he wants to meet Newt's creatures and show Credence some of what he personally knows about the wizarding world, but neither has any time for him. It starts to grate on Percival, being more or less ignored by the two men he's meant to spend the rest of his life with, to where he developes serious depression. He gets reckless at his job, taking dangerous risks, and may even start to harm himself in secret. It culminates in a suicide attempt and Tina and Queenie going full blown momma bears of Newt and Credence for not seeing what a gem they got for a husband in Percival. Make a very guilty Credence and Newt have to work to gain the privilege of being Percival's husbands, with an irate Tina and Queenie breathing down their necks. Maybe even have the creatures being angry at the pair of them to boot while showering Percival with affection when they finally get to meet him.