My boyfriend act cold and distant, and this killing me?

My boyfriend is introvert and unavailable emotionally , he’s rarely when he shows emotions , sometimes he’s cold and sometimes hot , he used to call me every night after he’s coming back from work, yesterday he didn’t call me because, he was with his best friend (male), and today he didn’t text me at all until the night he called me and we talk like 40 min then he Line cutting because he’s tired, I told him that I want to talk more but he ignored me, I’m really upset , I don’t know what to do, I think he’s taking me for granted , any help
My boyfriend act cold and distant, and this killing me?
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