...Victoria, suspicious of the relationship between Diego and Sharon, feigned interest in Diego. But she fell for him in spite of her intentions, and they began an affair. One day, just as they were declaring their love, Sharon was admitting her dalliance with Diego to Nick. Nick took it very badly, beat up Diego, then called up Grace and let her sooth his bruised ego in bed. Victoria found out and broke up with Diego. All the Newmans found out and took sides with Nick or Sharon as they told the kids they were separating once again. Diego explained to all that would listen that it was only one time, it meant nothing, and he was not the aggressor. No one believed him but Victoria, who forgave him. Unfortunately this meant she had to go against her family's wishes to be with the man she loved. She moved out of the ranch, and she and Diego were temporarily living together in a hotel. Nick disowned her, Victor tried to pay off Diego while comforting Sharon, and Nikki tried to get everyone to give them some space when she wasn't berating Sharon for her foolishness. But two thugs beat up Diego, took the $100,000 Victor gave him, and Diego was later found and taken to the hospital as a John Doe. Victoria tracked him down. Although things didn't look good, as Diego was in serious condition, he recovered. Victoria was looking forward to buying a condo together, but Diego was more interested in revenge against the guys who beat him up. He arranged, with the help of Larry, to coerce Victor into setting them up. The plot worked for the most part, and the thugs were arrested. Victoria decided she didn't like the vengeful man Diego had become and broke it off. Diego hit the road again for parts unknown.
After much soul-searching Nick decided to give his marriage another chance. Bringing flowers and a present for Sharon, he paused at the window of their home to see Sharon kissing Nick's father Victor. Furious, Nick called off any idea of reconciliation. When confronted, Victor took the blame being on pain pills, although the mixed up Sharon was once again coming onto any man who was nice to her. Sharon decided her life was a mess and left town. Cassie felt betrayed and angry with her parents after Nick brushed her off, being more interested in berating Victor than comforting his daughter. She wandered off and fell through the ice on the Ranch pond. Nick finally realized she was missing a long time later, jumped into the pond and rescued Cassie. She was Care-flighted to the hospital and was in a coma for days. Meanwhile in the waiting room, Victor confessed to Nikki that he was caught by Nick kissing Sharon. Slap! "How COULD you?" Cassie eventually recovered, Nikki blamed it all on Sharon, but forgave Victor. Sharon returned months later with a new resolve to not be trod on by any Newman again. Nick made up with her, though never forgave Victor. But Cassie has not forgiven Sharon for abandoning her. Suddenly Cassie's father Frank Barritt came to town and began trying to see her. Cassie wanted to know who he was, but her parents wouldn't tell.
In late 2003 Sharon was shocked realize software entrepreneur, Cameron Kirsten, had arrived in town to make a deal with Newman, and Nick was handling it. It was revealed that while she was gone all those months, she met up with Kirsten in a bar in Denver, they went up to her hotel room, and Sharon ended up having sex with him and being beaten to a pulp. Sharon had been afraid to risk her marriage by reporting it to the police, so she stayed away long enough for her bruises to heal. Cameron began taunting and threatening Sharon that he would tell Nick about "their affair" until New Years eve, when he told her to meet her at a fleabag hotel for another round or else. Sharon met him there, but refused to go through with it. When Cameron attempted to rape her, Sharon clobbered him over the head with a champagne bottle. In a panic, she dragged the body down the back stairs and hid it behind a dumpster, and before long it was buried in snow. Cameron was declared missing, and Grace Turner arrived in Genoa City looking for him. It seems they were involved in a long-distance romance, and Grace was fraught with worry over his disappearance. Sharon had confided the events of New Years Eve to Attorney Michael Baldwin who kept advising her to go to the police. Instead, knowing the desk clerk could identify her, and because it was beginning to thaw, she moved the body. Sharon made a wrong turn, ended up at a dead end between buildings in a seedy part of town, and was surrounded by thugs who wanted to rape her. She talked them into opening the trunk for a blanket, but they got scared and fled when they saw the dead body inside. Sharon drove off into the night and ended up at a biker bar out by the lake. On the way out after using the restroom, Sharon ran into Grace who hassled her about her appearance and her panicked state. Sharon finally had enough, and took her to the back of the car to show her why she was panicking, but the trunk was empty. Sharon made it home, but was still jumpy for days. Grace dropped by often, accusing her of killing her boyfriend. Sharon began to be haunted by the rotting body of Cameron. Then old friend Larry Warton paid her a visit bruised and beaten, just released from the hospital, asked Sharon about the body. Sharon, relieved that she wasn't imagining what happened, and gratefully, confessed the whole story. It seemed he had seen her arrive at the bar that night, popped the trunk and taken the body and hid it for her. Sharon was relieved when Larry promised to keep mum. But the haunting kept on, and the police started asking questions. Sharon thought she was going crazy and insisted Larry show her the dead body. Larry took Sharon, accompanied by mother-in-law Nikki, whom Sharon had confided in, down into the wet, stinking, rat-infested sewer, and found the body. Although she could identify the clothes as Cameron's, the face was too decomposed to recognize. Sharon continued to be haunted by Cameron and taunted by Grace until the body was discovered. Much to everyone's shock, the body turned out to be that of Cassie's father Frank Barritt who had stopped trying to see Cassie around New Years, so Sharon became the #1 suspect. At her last haunting prior to her arrest, Cameron finally said, "Gotcha." to her, and sent her running screaming from the house. Later on after Cameron showed up at the Athletic Club, very much alive, Larry, Sharon, Michael Baldwin and Nick figured out that Grace was helping Cameron with his plot for revenge on Sharon and convinced her to help them expose him. The body was found eventually after it washed out of the sewer, and turned out to be Sharon's X-boyfriend and daughter Cassie's father Frank. Cameron had set Sharon up for Frank's murder! Luckily for Larry, when all was said and done, he was not implicated. But Cameron escaped in his private jet with Sharon held hostage. Nick stowed away in the plane and jumped Cameron. They managed to get him into a parachute, and all three bailed out of the plane. Cameron landed in a tree which broke his leg, but Nick and Sharon made him walk to civilization where they called the police and turned him over.
Their harrowing experience made it easier for Nick to forgive her this time, but it didn't take long for Sharon to get back into her life and become bored again. One night she followed Nikki to where she worked as an MC at Marilyn's Cabaret. Finding a secluded spot, Sharon was fascinated watching their best stripper Brittany (A/K/A Marilyn) perform. Sharon began fanaticizing about doing the same, but once Nikki and Nick found out, they tried to point her ambitions in another direction to save her children embarrassment. Nick helped Sharon get a job at Jabot as Spokesperson through Jack, and since Jabot was still in a bad financial situation, Nick was paying her salary under the table. Sharon later found out, quit, but Nick hired his wife Sharon away from Jabot to be Spokesperson for the Newman Cosmetic Line.