side of that conversation that they were? >> oh, yeah. the friends said she was upset to the point of even crying sometimes. she was so upset with hunter that she was tearful and upset. >> hunter told police he was out with friends in downtown dallas the night christina disappeared and 20 miles away from that mall in plano. but when cops pressed him for details, he was vague. and there was one more thing. hunter would not give up his cell phone. >> that's like wearing a sandwich board saying, "be suspicious of me." >> so it's friday night, but they're not going out together. and he doesn't call when she's missing. and he won't let you download his phone. is that about right? >> that's all true. >> christina's mom also found hunter's behavior very odd. and she confronted him about it. >> i need to know why you didn't call, why you didn't check on her? yeah. i flipped out. >> i got little anxiety right now. >> jonni kept pressing hunter