I have a younger sibling that suddenly adopted my beliefs and interest in toto when they were an adult, after we had a fight, but without acknowledgment or recognition to me, and acts like they're original even though they're just copying me. Every time we have a family gathering, they're outspoken about these beliefs and interest as if they were their own. It's like I have a ghost trailing me, but I'm made to feel like a ghost because I'm not outspoken and all of my beliefs and so forth are being spouted by my surrogate. Also, I can't go to my favorite social spots since they're there as my surrogate, and I don't like being around them because it's like being around a clone.

Imagine if you were a tiddly winks aficionado since you were a small child, but your sibling suddenly becomes the tiddly winks expert at age 25, acting as though you know diddly about tiddly winks, but not only tiddly winks but every other thing you were ever involved in, on a wholesale basis. Imagine if you believed that the color purple was the coolest color in the world since you were a small child, but suddenly as an adult they wear purple all of the time, trying to make you jealous, and go around saying to everyone how they like purple way more than anyone else likes purple.