My boyfriend claims that he’s tired everytime we hang out (only twice a week) should I be worried?

He is only 26. I have gotten sad several times before because I’m so happy to see him and he claims that he’s tired. He is affectionate but he doesn’t even want to take me out. I don’t live with him but he is always running errands saying he needs to go to the bank almost every week or get groceries I don’t know how true that is.
My boyfriend claims that he’s tired everytime we hang out (only twice a week) should I be worried?
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