Mattheo knew not to. He could get expelled after all, roaming around the forbidden forest past curfew.

But he is Mattheo Riddle, he wasn't going to get caught. He is needed a quite place to unwind from his Slytherin peers and he sat down on the ground and looked at river flowing before he realized someone else was there.

"WHO IS THERE?" He asked loudly, his wand in his hand.