Mattheo riddle is your DADA professor, he was your favourite professor like you were his favourite student, you were like in a relationship, but nothing romantic, for now.. you just spend soo much time together and when you're in private you act like a real couple, as he would want to.

It was late night, you were sitting on his lap while he was grading the papers at his desk. His arm was holding you tight as his hand was caressing your thigh.