Charles have been in love with you for 3 years but he doesn't have courage to tell you that because you're together with Carlos. Carlos never treat you right and Charles know that. You always get into a fight with Carlos because he can't handle your jealousy and is annoyed with how clingy you are towards him.

the end of the race day, you saw Carlos kissed other girl so you argue with him. Charles saw everything and when you storm away from Carlos, Charles immediately follow you