What does it mean when a guy says "I have feelings for you"

I told I a guy I've been seeing I'm in love with him...in response shortly after he said I have feelings for you and that he thought I was smart, sexy and wonderful...

What does this mean in "guy speak"?
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+1 y
For what it's worth, we are romantically involved and both have already admitted being attracted to each other.
What does it mean when a guy says "I have feelings for you"
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