What that mean if guy said I am too innocent for him?

maplepancake
it is true my appearance looks younger than my actual age, I am just in the mids 20s, I used to think it is good thing when I look younger, but when I heard the guy said I am too innocent, I realized maybe it is not good at all.
recently date a guy, he asked me out but rarely text me, I have to think he might think same way about me, what should I do ?
What that mean if guy said I am too innocent for him?
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