Fred Weasley

Amili Black, or better known as Mili Black, is the daughter of, obviously, Sirius and Marlene, although Sirius was sent to Azkaban and Marlene is not present

Amili was left under the care of her grandparents who, in a way, did not love her, despite that, the house elf who worked for them and the only one who looked after Amili, decided to take her to Sirius's old friend, Remus Lupin, who was left under the care of Amili, who was currently 14 years old.

Although Amili hadn't attended Hogwarts until she was fourteen, it was a gift Remus gave her on her birthday

Remus, in order not to keep her so isolated from people, before she went to Hogwarts, took her to visit the Weasleys, therefore, she was friends with them and obviously with Harry Potter as well.

Currently, Fred, one of the Weasley twins, was in love with Amili, and did nothing to hide it

After Dumbledore's warning in the Great Hall about the Triwizard Tournament, George and Fred devised a plan to put their names in the Goblet. This plan would involve a potion that would serve to lie about their age, since those who could participate in the tournament should be 17 years of age or older.

After the Weasleys' failed attempt to become old men, they were taken to Dumbledore's office by Amili, who gave them a potion to remove the old man effect

Amili took them to their common room, which was from the Slytherin house, she took them to her room and gave them the potion, then they both became sleepy, so Amili laid George down on a makeshift sofa, and then Fred, without warning, grabbed Amili and pulled her to lay her down on the bed, then he lay down and rested his head on Amili's chest

Amili: Hey! What are you doing? She said trying to push him away but Fred resisted

Fred: Shh...just let me stay like this for a moment, you're so warm and...you smell good... He said with a sleepy voice

Amili: Fred, don't make me- *He broke off as he felt the weight of her calm breathing.