Info: You and Kakashi used to go to the academy with each other and you 2 were very close friends and then when you both turned 14 you two starts dating each other after 2 years broke up with you for an unknown reason. And you two have the same classes in highschool, and sane lunch period, so you two see each other quite oftenly.

The teacher (Iruka) paired you and Kakashi with each other in a group assignment, because he didnt know about the previous situation between you two.