Is it normal that i hate when other people like the things i like?

Ok so this doesn't apply to just ANY interests, before you jump to conclusions. Like for instance, I won't be mad at somebody for having the same favourite movie as me, or food, or book, etc. No. The problem comes when the thing I like is so ridiculously obscure and unusual, like I think I'm the only person in the world who is into it. Like how I'm attracted to tornadoes, or liminal spaces, or how I am in love with a literal song. I feel so different from everyone else, and I'm so used to being weird, and odd, and unusual, that it really causes me distress when someone says "oh I'm into that too." Or makes me feel like I'm not 100% unique and the only person who could come up with such an idea. When someone says this it's like they're snatching away what makes me unique and different, and what makes me ME. Maybe it's an overreaction, and I hate it, and I hate feeling this way and that I get so upset by it. (Others saying they like the same thing as me or feel the same way as me about something completely random only I could come up with.) It feels like the other person is taking credit for something I came up with and making it about them. I feel like a jerk or mean person for getting angry at the person, and I get upset and frustrated with myself, also. I had a friend who would do this, like copy me, and post things that I would say, to like copy me even though they weren't even true and he didn't even feel that way. He said he only did and said it because he wanted to be like me. But all I know is that when someone does this, my eyes get prickly, I feel hot, and like I might cry, and sometimes I actually cry. It happened the other day when someone made a post here saying the exact same kind of thing that I would say, and that I made up. It happened when I said I fall in love with a song and someone said they have a crush on a song too. But I just don't believe that they do feel the same way or same feelings, and that's why it makes me so upset. Part of who I am is, like, I see myself as the "weirdest person in the world." Or something like that. And if I say something true, about myself, that is completely wacky, so wacky that some might think it's trolling, and then someone says "oh I feel exactly the same way!" It's like, taking away everything that I am... It feels like I'm no longer an original person... That my thoughts and feelings are not my own and mine alone... I needed to vent about this and know if it's normal and also what can I do to stop feeling like this?