do 당신 think 유명인사 have their own 가장 좋아하는 celebrities?...

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Uh... I don't know about those of which 당신 have listed, but yes, I do believe 유명인사 have their own 가장 좋아하는 celeb.
It makes sense.

Of course they do! It's not because you're famous that 당신 can't be a 팬 someone else! Here's an example: the 고수, 드러 머 of Styx is a 팬 of Breaking Bad and RJ Mitte who stars in Breaking Bad went to see Styx in 음악회, 콘서트 because he's a 팬 of Styx... :D

Of course yes!
Justin Bieber was obcessed with Beyonce!!! :D

yes

Yes...it only makes sense. They are real people with favorites like us...only most of us aren't rich 또는 well-known...but everyone has some sort of obsessive side.