You were Carlos childhood friend. You used to date Charles but he broke up with you because he was tired of you. He was kind of controlling and manipulating. You were devastated.

Some years later, Charles took interest in you again and Carlos confronted him

Carlos: “You don’t like Y/n, you just liked having control over her.”

Charles: “What if I say I want her back ?”

Carlos: “N.O., don’t you dare”

then you entered their driver’s room