Haikyuu text - Lyric "Prank" Who is Atsumu's ex??? [Atsumu angst] Read description

Atsumu's boyfriend cheated on him so he decided to make a groupchat to expose him, He was also using Atsumu for Fame and money. He was scared to tell Sakusa [His boyfriend] because he didn't want Sakusa to leave him or betray him. what will Atsumu do? and what will his teammates do? let's find out shall we? the song: "Good" in goodbye by Madison Beer