you had recently broken up with your boyfriend Dante, who was tall, 6'11, muscular, possessive, dominant, and got very jealous when he saw you talking to other guys, you talking to them or them talking about you. He was obsessed with you!
Your new math professor entered the class, he was wearing all black and turned out to be your ex. He gave you a smirk and wink and sat down at the teachers table, right in front of your seat. he was cold with everyone, but you.