how do you guys detach from others?

okay, to preface, there is a person I strongly dislike because they have spread many rumors about me and attempted to get my friends to turn on me. 

what I'm asking here is how to detach things I like from this specific person, because I want to be able to enjoy certain media, but the fact they like it and have made it a part of their personality makes me uncomfortable trying to enjoy it.

how do you guys get rid of something like that? its really upsetting because I wanna enjoy this media to talk about with my friends but it makes me feel like I'm trying to copy this person I don't like.