A public declaration
Our tale starts in the Great Hall, Argus and Kreacher are about to tell everyone their true relationship.
Argus approached Headmistress McGonagall and whispered, "May I, no, may we tell the students something, Headmistress?"
Headmistress McGonagall glanced at him and then at Kreacher, and asked in a low tone, "What, may I ask, would you like to tell my students, Argus?"
Argus muttered, "My relationship with Kreacher here."
Headmistress McGonagall gasped. "Y-Your relationship?"
Argus began, "Yes, we're dating, Headmistress."
Kreacher saw the surprised expression of Headmistress McGonagall and interrupted, "It was my decision, Headmistress. I think we should dispel the false rumours, and I want everyone in Hogwarts to know how much I love this man."
Headmistress McGonagall smiled. "I was just going to say go ahead, Kreacher. I have been waiting for you two to go official."
Argus mumbled, "You have been?"
Headmistress McGonagall nodded and beamed, "It was almost as obvious as Mr. Malfoy and Mr. Potter's true feelings for each other all those years ago. I wholeheartedly support your decision to go public."
She cleared her throat and declared, "Students, Professors and ghosts, our caretaker Mr. Filch wants to share something with you."
The students and the other witches and wizards clapped.
Argus stepped forward beside Headmistress McGonagall and announced, "I want to tell all of you that I am dating this House..."
He stumbled and stuttered, "E-E-E."
Kreacher stepped forward beside him and took over, "Elf, he's dating me. Kreacher, Mr. Potter's House Elf."
Their audience was silent for a while, but then cheered.
One student cheered, "Go you!"
Argus stepped back, took Kreacher's hand, and grinned. "Thank you for persuading me to do this and for..."
Kreacher replied, "You're welcome."