Atlas was your best friend for around 12 years until he got a girlfriend. He started hanging out with her way more and barely paying any attention to you. You felt like half of you was missing almost. You guys have been planning to match costumes on Halloween all year round. So you go up to him and ask and he says

Atlas: “Sorry...I forgot. Rachel and I are already matching together. You don't mind, right? There's always next year.”