He texts me everyday but trying to hold a conversation with him is like pulling teeth?

The guy I have just recently started seeing texts/ talks to me everyday but sometimes getting him to have an actual conversation is impossible...he's not like that when we are together. He seems way more confident in talking to me when we are actually together. I'm wondering from a guys standpoint why this might be? Is there anything I can do to help smooth out this lute cork of his!?
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*little...not sure why my computer changed it to lute. Lol
He texts me everyday but trying to hold a conversation with him is like pulling teeth?
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