The following article contains an answer for the question: Who did the undercover agent that died have an affair with? , can you please find it? 

Ray Dolezal, a bored Torrance County Deputy Sheriff, is called to the scene of an apparent suicide in the desert. Alongside the body of Bob Spencer is a suitcase containing $500,000.  During the autopsy, they find a digested piece of paper with a phone number; Dolezal, posing as Spencer, calls the number and goes to a meeting, where he is robbed and instructed to meet Gorman Lennox at a restaurant. FBI agent Greg Meeker intercepts Dolezal and informs him that Spencer was an undercover agent. Now that Dolezal has lost the money, Meeker suggests he continue posing as Spencer to recover the money or help arrest Lennox.
Dolezal meets Lennox and his wealthy associate Lane Bodine and learns the money is intended for the purchase of unused military weaponry to arm left-wing freedom fighters in South America.  The arms dealers demo the guns for Dolezal and Lennox, but demand an additional $250,000 due to unforeseen expenses; Meeker, unwilling to provide more money, pushes the responsibility on Dolezal, who romances his way into Lane's life so she will attract rich humanitarian donors to fund the deal. Meanwhile, two FBI internal affairs agents suspect Dolezal of killing Spencer and stealing the money. Dolezal is forced to admit to Lane he is not really Spencer, but she agrees to help raise the money because she finds Dolezal a better alternative to the volatile Lennox.
Dolezal learns from Noreen, who had an affair with the real Spencer, that he was working with an FBI agent who likely killed him. Noreen runs away at the sight of Meeker and the internal affairs agents grab Dolezal.  Lennox runs the agents off the road; Dolezal flees and returns to Lane.  He discovers Noreen shot dead and a Polaroid of her with Spencer and Meeker.

Noreen