Newt somehow gets Graves to arrest him to get out of a bad situation. Like Newt is trying to save some black market creatures, and the next thing he knows he's being followed by some shady characters. Somehow he causes a scene or does something that gets Graves to come down and arrest him, successfully warding off said shady thugs.

He finds this very effective and keeps doing it, for whatever the situation. Eventually Graves doesn't even try to arrest him, just shows up all "what now???" (Of course he secretly loves making sure Newt is alright)

Bonus:
Lots of manhandling or physical contact (I just love the idea of Newt feeling safe with Graves even though he's getting freaking arrested)