the four boy were talking to each other there was Harry Blaise Oliver and Cedric

the four boys were talking to each other then Harry needed to talk to Hermione

Harry: Im gonna look for Hermione

Blaise: okay

Oliver: go ahead

Cedric: Sure

Harry went to talk to hermione when he saw you with her

Harry: Hey Hermione who's this?

Hermione: This is my new friend!