But Jessi also e-mailed one of Montgomery's co-workers, a 22-year-old, good looking, part-time machinist and college student named Brian Barrett, to see if it was really true.
Brian's screen name is "Beefcake" and as he consoled Jessi online, she seemed to find a better fit with him -- and perhaps a way to strike back at the combat Marine who wasn't.
Before long, Jessi was sending Brian her photos and the two had become a cyberitem. Marinesniper became consumed with jealousy -- and he wasn't about to take it lying down.
"Brian will pay in blood," Montgomery instant messaged Jessi at one point.
His messages became increasingly violent, as he was forced to watch their romance blossom in the same chat rooms he used to frequent with Jessi.
"He was enraged," said former prosecutor Ken Case. "I mean, it oftentimes shocked me when I saw the names that he would call her."
Jessi and Berrett took to the Internet to make sure everyone knew Montgomery (who recently had a birthday) was a liar.
"They were then going into these chat rooms, and letting people know that he was actually 47 years old," said Case. "They almost made him out to be a pedophile."
But the IMs that came from Talhotblond showed her to be torn --- mad one instant, desperate to return to a love with a man who she knew didn't exist ... teasing him.
She continued her talking to Montgomery online:
Talhotblond: i ache to be with tommy
Talhotblond: do you miss it tom
Marinesniper: more then u will ever know
Marinesniper: my heart aches to hear you call me your tommie
Marinesniper: i wish i could be that 19 yr old marine for u
Talhotblond: i know tom
Jessi took up with Montgomery again.
"In his mind, this was the jackpot," said Barbara Schroeder, who documented the bizarre relationship in a documentary called "Talhotblond." "He was being accepted for being 47, and he still had this hot young girl who wanted him."
Montgomery knew he was in way over his head, but he couldn't bring himself to end things with her.
"It was like a drug. I was addicted to it," he said. "I couldn't just, just end it."
At one point, when his wife actually told him to get off the computer and talk to her, Montgomery couldn't. "I just told her I'll get off when I'm done," he recalled.
Montgomery says nothing sexual happened between them after Talhotblond found out how old he was, but their IMs tell a different story:
Marinesniper: wish you were nude
Talhotblond: what would ya do?
Talhotblond: that all
Marinesniper: u might get the magic
Talhotblond: make love to me tommy
But it didn't last. Jessi told Montgomery they were through, and seemed to take up with Barrett again. Montgomery began to go into a downward spiral.
"The obsession turns into jealousy, and then the jealousy turns into betrayal and revenge," said District Attorney Frank Sedita. "You really start to get a, a sense of this person going into an abyss. And it's, it's kind of frightening."
And then ... the tipping point. Barrett said he was going to meet Talhotblond -- in person.
"He actually drove down to, I think North Carolina," said Case. "And on his way back, he was saying, 'I'm going right past your house. I'd love to get together.'"
Jessi texted him at the last minute not to visit, but Montgomery, who had learned of the plan to meet, was incensed.