If he didn't fall for me back why doesn't he want to open up about feelings?

When you tell a man that you fell for him and then he tells you that because of what he is going through at the moment that he doesn't want to open up about feelings. What exactly does this mean? If he didn't fall for me back why doesn't he want to open up about feelings?
If he didn't fall for me back why doesn't he want to open up about feelings?
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