Why would a guy after 5 days of talking online say he has strong feelings for you? Can guys with real experience give me some helpful feedback please?

I can share more details in the comments if need be.

We’re both older in our 40s, and we ‘met’ on a dating app, been chatting for a few days…he’s serious about what he wants but he’s already starting to playfully say he has strong feelings for me. Is this more than likely a red flag or do guys do this when they really like someone?

Why would a guy after 5 days of talking online say he has strong feelings for you? Can guys with real experience give me some helpful feedback please?
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