How do you know it's love or a strong like and not infatuation?

I've only been talking to this guy I met on a dating app for 12 days but it feels like I've known him forever. Our conversations are so great and I feel myself falling deeper in like with him each and everyday.

I just want to know that this is the real deal and not infatuation. I feel like with me getting to know him on a deep level that it's not infatuation but I know falling for someone quickly can be seen as such.

I also know that meeting in person will really seal the deal on whether we are really compatible but I just feel we are based on our conversations alone.
How do you know its love or a strong like and not infatuation?
How do you know it's love or a strong like and not infatuation?
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