Why doesn't this guy know how to talk?

I (21f) have been out on a date with a guy (24m) twice, the first one felt a little awkward, there was silences that went on for too long to be considered comfortable and where I had to really work to get him talking about himself or me. I thought it might be first date nerves but date 2 especially halfway through he was very quiet, I had to ask him step it up a little and to ask me about stuff. Which only worked for a day.

When he asks how my day went no matter how boring I'll find a way so that it opens up into a new topic or say how I feel, without trying. When I ask him about his, he'll say boring, the same as usual. I know he's into me because he says so on dates and calls. At first I liked it, feeling like the initiator and social but now its like I'm carrying the conversation. I want him to open up to me and put energy into the conversation but it just isn't happening.

Recently it's like he's replying to me and not actually conversing with me. Its getting so annoying, brought this up with him and he doesn't seem to understand. Im yet again doing all the talking.

Why doesn't this guy know how to talk?
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