Hello Mary,
As one of your good friends, I figure I should give you some advice regarding you talking to others during class. No offence, but you talking too much in class has, to some extent, negatively affected my grades. As a friend, I dont want to totally blame you for this, but i do recommend you not to proceed this kind of behaviour. If you appreciate our relationship like I do, please consider my suggestions. Thank you.
Best regards,
XXX