So I had a private encounter with a guy from my school, and I thought it was totally anonymous. Turns out through mutual friends, he found out who I was. I didnt know it was him when I accepted him on Facebook, until he messaged me today and told me. I explained to him I don't want to do anything with him anymore, since I no longer want relations with guys and I felt wrong about it. He got angry that I didnt want to do any more. He calmed down when i told him we can work on being just friends. but he still keeps egging me on. he'll be in my dorm building next semester, and our mutual friend lives just doors down. I told him i'm not changing my mind. but now I'm afraid I'll see him often, or he'll keep messaging me on FB. After talking with him about it I got a phone call from a restricted number, and im thinking it was him. I answered but hung up because I didn't recognize the voice. It called back once before he messaged me again. What do I do?