Graves is very handsome, beautiful and elegant, it is not uncommon for someone to try to courtship him, Graves simply responds in a kind but cold way, is not interested because he has a healthy relationship with his beloved Newt but there is always some insistent suitor who will not give up So easily, maybe some important magician and Graves can not be too abrupt with him by protocol, it's Newt's turn to assert his place as Graves' partner (maybe his very jealousy pushes him, maybe Tina tells him to be A man and defend his boyfriend) the problem is that Newt, although dying of jealousy does not know how to make himself heard so he resorted to imitate his creatures and tries to intimidate the intruder with male dances, Graves does not know if to be offended or Softened
Graves / Newt, Newt is jealous so him Mark his territory /humor/