I’m 25 and I’ve never been in love. How do you know if what you’re feeling is love?

I’ve been asked out on dates before and have been on some. Had a few crushes and flings, but things don’t progress beyond a certain point. I guess after my first real crush, I’ve never liked anyone as much ever again. Is this normal? I don't know it just feels like love is not for me, even though I really want to experience it.
I’m 25 and I’ve never been in love. How do you know if what you’re feeling is love?
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