Is someone stalkin me?

Every time i walk home from school thiers this old man i have to pass next to. He always ask me why i dont smile.if he ask me this again this year im afraid i might let my anger out on him. So i started walking on the other side of the street and that day i was walking home from step team tryouts he yelled saying why are you late. So im scared. Itried walking the other way home its to long. And my friend says that the man is silent to them. I have no problem with old people but this one is agrivating!he asked me all these diffrent questions each day that i dont even remember!