Although the savage attack at the Manchester arena will never be forgotten, people do move on and sometimes memories fade.
But not for Ariana Grande.
Slap bang in the middle of her world tour, the big-hearted star - who organised the amazing One Love concert - took time out to pay tribute to one of the youngest victims of the attack.
After her show in Buenos Aries on July 4, she singing superstar posted a message to Saffie Roussos, whose birthday it would have been.
In the post, Ariana wrote: "Saffie, we're (thinking) of you baby" alongside a birthday cake emoji.
We've lost everything. We have, we've lost everything, because life will just never be the same.
At eight years old, she was the youngest victim of suicide bomber Salman Abedi's attack and would have nine on July 4.
Meanwhile, on the day of her birthday, Saffie's family marked her big day by remembering how she had been so looking forward to the concert.
Her sister, Ashlee Bromwich, said Saffie had been "elated" to see her idol live.
"She was Ariana Grande-obsessed, so to see how happy she was, it was just ... obviously I had to go with her," she told the BBC.
Devastated dad Andrew said: "You couldn't be out with Saffie without having fun, but her dream was to be famous.
"It was her everything and we bought her the tickets for Christmas.
"She was just counting the days, the seconds and it was just Ariana Grande until nine, 10 o'clock at night. And she would sing and dance every single song."
Mr Roussos has recalled how he felt when he discovered that he and his family had lost their daughter.
"We've lost everything. We have, we've lost everything, because life will just never be the same."