Person with a crush on me making me uncomfortable?

So this person (Angel for privacy reasons) has a crush on me. It's been going on for quite a while now and honestly it's making me a little uncomfortable and pretty annoyed. Angel always feels the need to show up and walk with me despite it being a hassle to get there (as in walking across campus to get there). I feel like wherever I am Angel appears. Angel also always stands near me in group settings despite me making it very difficult. One example of this is when I was in the middle of two friends talking and Angel simply stood behind me. Sometimes Angel says I'm manipulative, play with their emotions, or that I lead them on. Despite me being clear that I don't feel the same way, all of this behavior still continues. My friends have told me it's quite creepy, and that Angel follows me around like a dog.

I don't know if I'm maybe doing something to encourage this? I do have Angels number but I never start conversations. I don't seek Angel out. I don't make efforts to be alone together. If anything, I very much avoid being alone with Angel. I make it difficult for them to even talk one on one with me most of the time. I'm still polite with Angel though I've never even hinted at returning these feelings. Am I an *******? I just don't get this.

Probably at the point where you need to tell them what works for you and what needs to change. If then you’re being accused of being manipulative, become hostile and get your friends to warn them off too. Why Angel?