"Mark Hawkins and Casey Anthony used to date. Mark Hawkins is in the Marines and is currently stationed in San Diego California.
Mark Hawkins has a wife named Tara.
Lee Anthony and Tara had been dating for a long while until Tara suddenly got engaged to Mark Hawkins.
Mark Hawkins and Casey Anthony were supposedly seeing each other while Tara and Lee Anthony were also dating.
According to transcripts from friends of both, Lee's Facebook and myspace pages, Lee was enraged because he thought that he and Tara were going to stay together and possibly get married in the future, but instead she dumped Lee and got engaged to Mark Hawkins. (If you read Lee ANthony's myspace entries and Facebook entries immediately after being dumped by Tara, you can see that he and Casey do NOT take rejection well at all.)
Casey called Mark Hawkins the week of June 16th and told him she had something "very important" to talk with him about but she WANTED TO DO IT IN PERSON ONLY.
Many people have wondered if Mark Hawkins is Caylee's biological father; whether Casey was planning on flying out to San Diego to be with Mark and had set it up (by leaving the car abandoned with Caylee's fave doll, Casey's purse on front seat, etc.) to look like BOTH SHE AND CAYLEE were kidnapped, so when Caylee's body was discovered eventually Casey could blame the kidnapper, and she and Mark could live happily ever after explaining to Mark that her mother stole Caylee from her and that she wanted NOTHING more to do with her family for taking "custody" of Caylee, thereby continuing her cycle of keeping her parents away from her friends so that they couldn't catch her in her multitude of lies." From
http://community.discovery.com/eve/forums/a/tpc/f/3581916879/m/57919037001