Percival can hardly believe that after everything that has happened with Grindelwald and his own torture and imprisonment he's ended up with not only Credence but Newt as well. In the beginning Percival is more happy than he's ever been but slowly the doubt starts to creep in. Everything that Percival went through had left his confidence in himself very shaken. When Newt and Credence start to spend more time together taking care of the creatures and Newt teaching Credence how to control his magic instead of Percival, the auror starts to feel less like a lover and more like a third wheel. This goes on for days if not weeks with Percival slowly feeling like he's dying inside and both Credence and Newt innocently oblivious. It all comes to a head when maybe Percival in his distracted state gets seriously hurt on a case or Credence and Newt forget his birthday. Either way Percival sadly tries to break things and go with the two men he loves most. Credence and Newt are horrified by what they've allowed Percival to thing and are now hellbent on showing their Percival just how much he means to them. The magical creatures helping them do this is a great bonus!