In his diary entries, he wrote that he was "beyond" help and wanted to die but not before living out his depraved and violent sexual fantasies.
"I truly enjoy the hunt and cannot wait for my prize," he said in one entry.
In November 2012, he approached the woman in her office and asked to be shown to a secluded model home.
He acted strangely and she declined, telling him to go by himself.
Yeager returned minutes later and told her there was a water leak in the house, imploring her to go with him. When a male colleague entered the room, Yeager panicked and fled.
When the female agent later went to check the home, she found the curtains had all been drawn and the lights were out but there was no sign of a leak.
Yeager's attempts were reported to police who searched his home and truck and found the diary entries along with rope, chains, guns and duct tape in his vehicle.
Yeager confessed to the plot unreservedly. He said it was the result of a lifetime of bullying and that he knew he would never get 'what he wanted' - a wife and children - so had decided to take his own life.
"I have been planning and wanted this my whole life... the help I need is too great and I would rather die," he wrote in one entry that was obtained by Leigh Valley Live.
The man's parents pleaded for him to be spared jail in court. They told how he was forced to undergo several facial surgeries as a child and was mentally ill.
His problems led to intense bullying, they said, and he had never been violent in the past.
"He has never hurt anyone. He wanted what everybody else wanted - a wife and a home," his mother Angela told the court in 2013.
His case returned to court this year when he appealed his 10-20 year sentence that was handed down in 2013.
Yeager argued that he had inadequate advice from his lawyer at the time who he said did not challenge the legality of his confession. His appeal was thrown out by a Superior Court in Pennsylvania last month.