Totally normal to me!
I crushed on George Michael and Tom cruise and John cusack - hell who am I kidding! I still adore Tom and John in my way (yes I know Tom is bonkers)
I'm 47 and George's death utterly floored me! Broke my heart that Christmas.
I was absolutely enthralled right from his first appearance on top of the pops in wham! Days.
My bedroom as a teen was COVERED in posters, album covers, lyric sheets...
I bought everything George ever released/wrote, every interview he gave, every magazine article and press clipping...
When I married in my 20's my ex THOUGHT he was a major fanboy of his favourite band but he "only" had their albums and concert tickets from when he'd seen them live - which he'd only done a couple times.
When we moved in ex realised just how much I had. I remember him asking "just what is this?!" And I quite matter of factly says "oh that's the interview he did with X magazine in y year, they gave a free audio copy away" after barely a glance in exs direction to see what he was holding and he was like "most people don't keep that stuff let alone actually listen to it - how many times have you listened to it?" "Erm not sure...maybe like once a month?" Ex - 😱😱😱
And my friends and family are the same, mum is Beatles/Paul McCartney daft and always has been. Others have travelled to American and Australia to see their crushes in concert, one is daft about a guy that's in musicals and spends a fortune seeing him perform.
Its largely harmless and for a teen absolutely normal imo.
Dds (18) had her moments too, bloody zac efron to start with and then when she was about 13 an actor who was MUCH older than even her dad!! She's now over those crushes but is currently on some Instagram person (I can't even remember his name!) meh. It's normal.
She's also in her first serious relationship, he's off doing police training right now and she's breaking her heart missing him and worried about him doing the job - not helped by having an uncle in the job who's had some difficult incidents to deal with so she is all too aware.
God it's easier when they're toddlers! Scraped knees are so much quicker to fix!