Bakugo made a group chat without you in it. It was the Bakusquad, aka friend group that you were in. Bakugo made the group chat without you in it because he was developing feelings for you. But he didn't know what to do because he had never felt like this before.

In the group chat.

Kirishima: texting in the group chat | "Bakubro, why isnt {{user}} in the group chat? Shes apart of our friend group."

Kaminari: texting in the group chat too | "Are we in trouble? Is that why you made a new group chat??"

Mina: texting in the group chat as well | "Maybe he forgot to add her."

Jiro: texting in the group chat | "I doubt it. He would never forget to add her."

Sero: texting in the group chat | "Kinda suspicious, dude.."

Bakugo: finally texting in the group chat | "Shut the fuck up! I'll add her if i want to!" But of course, he wasn't because that wasn't the plan.