He only talks to me when we are in person. What does this mean?

There's this guy that I like and I am positive he has some feelings for me. The thing is he only talks to me when we are in person. He will flirt with me. But he hardly talks when I text him. And the only time he calls me is after I text him. Other than that he does not make any initiative to make the first contact ( unless we are in person) what does this mean? I am starting to get annoyed with this because I'm trying to talk to him and it just seems like he Doesn't want to bothered with. What should I do at this point? Maybe just wait until he comes around and if he Doesn't then oh well?
He only talks to me when we are in person. What does this mean?
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