What does it mean if a boy cries on the phone to you?

Like, it was the same boy I always talk about on here. but I never ever same what he had done. Like for instance after he told me who he was he had asked me if I know him, and I said "I don't know you" but I was kidding!! But he also broke out in tears in the background on the phone, but when he was doing this I explain him to call me back later, I'm busy I said. But when he has come back on the phone him DID NOT hear anything I have said to him and his voice was different like he has been crying. He had asked me if you like scary movies? And I hang up because I was busy!!
I can hear him crying real loud not too loud so he thinks I can’t hear him, but enough to hear that he is crying. Please Help!!! It been 4 to 7 mouths I seen him and I just what to know what does it mean Please Help!!! I'll probably tell you more lately, But not right now!!
I have asked my teacher about the same thing and I’m still confused.