Writing about someone?

It might sound a little weird but my question is do you guys think like for example if you write a song and you dont have a partner and you write about a love song that how the other person amazed you by having a lyric like i didn't cry for that song but you did for example and that was actually an event you had with your best friend but you dont have any feelings for her it was an inspiration

Do you guys think its okay or weird

Writing about someone?
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