what if he were married when he and Casey had a one time affair? What if she became pregnant, and she demanded money for an abortion or support after she found out? What if he didn't want his wife to know about Casey or a baby? What if she found out his real name and where he lived and threatened to tell his wife or go to the police if he didn't help her financially, and also tell them he raped her? She's a good liar.
What if he never told her his real name, but she found out and told him if he didn't support her and Caylee she'd go to the police and tell him he raped her. What if she found out where he lived. What if she threatened to expose him and he's a well known personality, or a politician, and didn't want to get mixed up with Casey or the situation, but when she started harassing him, and threatened to ruin his career and his marriage, he decided to do something about it. And perhaps he knew the right people to help him. Maybe he indirectly threatened her and now she's afraid to tell the truth. Maybe he knows a few important people.
What if .........? What if she then went away to find him. I've thought there might have been a real father for sometime mixed up in all this. Remember Fatal Attraction? A bit of a difference, but a crazy woman trying to blackmail a one time lover.
Never happened.