Is it weird that my 30 year old boyfriend follows a famous 18 year old tennis player girl and likes her photos?

He likes tennis a lot and follows a ton of male players but he recently followed an 18 year old girl who’s super famous and he likes all of her photos, even non tennis ones... is this weird or creepy? Or normal? Does it mean he’s lusting after her? She is pretty/cute.
Is it weird that my 30 year old boyfriend follows a famous 18 year old tennis player girl and likes her photos?
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