Newt takes a deeply traumatized Percival and Credence under his wing and they begin to recover under his gentle care. The many magical creatures come to care for Credence and Percival as well. The Niffler loves Percival who keeps giving it shiny things, while the Swooping Evil is actually tender towards Credence and doesn't threaten him. The Erumpet wouldn't mind dancing with either of them and so forth. Newt couldn't be happier. One day he goes out to go and get something important, leaving Credence and Percival to care for the creatures, and when he comes back he nearly cries at the sight that greets him. Basically, all of Newts creatures friends have piled around Credence and Percival in one giant puppy pile, all of them content in sleep or simply lounging in the warms. Newt dives right in himself and maybe even asks his two lovers a very important question while he pulls a ring box out of his pocket.
Newt/Percival/Credence: Newt finds his loves all piled together