weird feeling

so basically there's this person who kinda freaks me out they were in my first semester class during freshman year and we hardly ever talked probably only like four times but this year they are in my block which is P.E but we are not in the same class everyday he starts a convo but I just get rlly awkward and uncomfy sometimes he cuts in line just to be next to me and talk he just makes me feel unsafe even if he hasn't done anything

but last night I had a dream where he broke into my house and tried to give me flowers but I rejected him and he attacked me I know it was just a dream but it really freaked me out and he said hi earlier this morning by grabbing my shoulders and I ignored him and speed walked away

idk what to do