Stalker

Lately i feel like i’ve been stalked by someone and my main suspect is this one guy in my class. Hes a loner but his face is kinda good-looking ig bc he once got confessed by our junior. He always follow me and sometimes i can feel his gaze from his seat. Idk why he stalk me but i think its bc i once save him from got beated by our school deliquents. Tbh i was just coincidentally happen to be there bc i lost my way and when i saw them i was just “what the hell r u guys doing?” And miraculously the deliquents run away (maybe my face is too terrifiying lol)

He still dont do smthng creepy....yet. So i want some tips how to ask him to stop stalking and watching every fcking action i do.