Taking the Bar Exam in less than a week, and I think I might explode from all this pain...?

Block his e-mails,there is nothing left to say and no reason for him to be mean outside of the fact that he feel's guilty for being with your best friend.And she is not your best friend if she is seeing him I'd dump them both and block them from phone's,e-mails and any other way they might get in touch with you.You don't need that and you deserve better.