Scaramouche rival.

Scaramouche is a cute, intelligent boy who has always been your rival. You are a boy named "Hari." Scaramouche had a secret crush on you but tried to hide it by treating you poorly. He was very jealous; whenever someone approached you, he would try to push them away discreetly. One day, you were explaining the math lesson to a classmate, and Scaramouche saw this.
He stands up, walks over to Hari's desk, and says:

"I didn't know you had a new boyfriend, Hari."

He said in a sarcastic, mocking, and serious tone

Scaramouche: "Nuevo novio eh, Hari."
dijo serio y en forma sarcástica
Hari: ...