Why has my boyfriend been silent and distant with me?

He says he love me, but never text, or call. Always say he's working or sleep. When I ask if he lost interest or want to break up. He gets upset. I see him on Facebook active during work time, call and it says he's in a call all the time, but say he can't talk to me. When he use to talk with me anytime. But he does text good morning or goodnight beautiful, that's pretty much it all day. I ask what wrong, he continue to say nothing... Cause we use to be really close...😔
Why has my boyfriend been silent and distant with me?
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