What is he trying to say to me?

I've been talking to this guy for almost two months. We get along well and text almost every day, and may have had some flirty messages from time to time. Some days ago I asked if he is usually that flirty with his friends and he said that of course not, so I asked him if he liked me and he said maybe, so I ended up telling him that I like him. He just seemed surprised and said that he didn't know what to say. So I'm quite confused because he is still talking to me as usual but I don't know if I should move on or clarify this situation.
What is he trying to say to me?
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