When a guy says 'thank you for existing' to a girl, does it mean he likes her?

So yea the question basically says it all. He said 'thank you for existing!' to me, to which I answered 'aaw so much love for me today, not necessary though'. He responded that he really meant it and he doesn't say that often. What does this mean? Does he like me?
When a guy says 'thank you for existing' to a girl, does it mean he likes her?
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