And...regarding the lying of this new Tony...
All of her other friends who were part of the affidavit...EVERY SINGLE ONE...was shocked and appalled and came forward very willingly. Perhaps because they all had connections with Caylee, so it was personal that there was a sweet little girl missing, but they all found the truth to be important. It does seem like perhaps him having something to hide was bad.
Just think about it...he could have, in the alternative, come forward after the news broke and said to his superiors, "OMG, you wouldn't believe it, but in the last 6 weeks I've been in contact with that Casey woman. We've emailed and chatted online, we've even had sex. Here's all the information I have. Also, I would be happy to help in the investigation in any way possible."
Because, well, just think? What if they had let him be a part of the investigation? Maybe she would have even confessed to him? And there was enough time before she clammed up for that to happen, should this new guy have chosen a better path.
So even though he may have been targeted prey of a sociopath (and probably was in some ways) he still had choices he could have made that would have redeemed his victimization. If that makes any sense!