Dominick was introduced when he wound up in a hospital being cared for by Bridget Forrester. When his mother Jackie showed up, she took his Marone ring and hid it before anyone could see. Within a short period of time, she admitted to Massimo that Nick was his son, and Nick soon embraced his family with open arms, even welcoming his new half-brother, Ridge. Unfortunately, this caused some problems with Nick's romance with Brooke, as she was shocked to realize she was dating another Forrester brother. As time went on, Brooke got back together with Ridge, and Nick pined in silence for the woman of his dreams. When Ridge was presumed dead, Brooke and Nick found comfort in each other's arms. When Ridge came back from the dead, Nick and Brooke decided no one ever needed to know, but when Brooke turned up pregnant, the secret could not be hidden, especially when paternity tests determined Nick was the father. After Brooke and Ridge's marriage was annulled, Nick began looking forward to a life with his son and Brooke. He proposed to Brooke, and although he initially wanted to call off the engagement after learning that his family had pressured her, he decided to go through with it.

Nick and Brooke were in the process of saying their 'I do's' when Ridge burst in and interrupted the ceremony. Nick and Massimo were carted off to jail (the charges were dropped), and by the time Nick was able to see Brooke again, she had already decided her place was with Ridge. After Jackie told Nick that there was a potential problem with the DNA test results, Nick insisted on having them re-run, and the new test results proved Ridge to be the father of Brooke's baby. Nick was devastated and retreated into himself for awhile, unable to stop loving Brooke, but knowing they weren't meant to be together. Nick had a brief relationship with Felicia Forrester which helped him get over Brooke, but the two just weren't meant to be, and she left town. He was intrigued when Brooke's daughter Bridget appeared on the scene, and initially the two were just friends; he tried to help her forget Ridge while she tried to help him forget Brooke. It wasn't long before it turned romantic, and the two fell in love. Nick finally proposed to Bridget, but their wedding day was interrupted by the appearance of Ridge's long-thought dead wife, Taylor.

Nick finally accepted that he had never truly forgotten Brooke, but there was a complication -- Bridget was pregnant. When Bridget told Nick she had an abortion, he and Brooke felt they finally had the green light to go ahead and plan their future together, but before they could tell Bridget the truth, she admitted that she had lied about having the abortion to test Nick, and she was still pregnant. Nick and Brooke still loved each other and wanted to be together, but finally agreed that the most important thing was Bridget and the baby she was carrying. Just as Bridget and Nick were starting to get smoothly back into the groove, Felicia returned to town with a shock -- she had given birth to Nick's son, Dominick Jr., while in Europe. She also revealed that her cancer had come back and she was going to die, and she asked Bridget and Nick to look after Dominick once she was gone.

Nick was on top of the world -- Bridget was expecting their daughter, and Felicia had given him a beautiful son. While having a romantic dinner together, Bridget went into early labor, and Nick wasn't there when she gave birth to their baby daughter, who tragically was stillborn. Both Nick and Bridget were devastated by their loss. Once they returned home, Bridget again offered to let Nick go, but Nick convinced her that no matter what, he still loved her and wanted her. Bridget realized that Nick's real love was her mother and presented Nick with divorce papers. Even though Brooke was engaged to Ridge at the time, they reunited and married in a beautiful ceremony, Nick in his dress whites and Brooke arriving in a white horse drawn carriage. The marriage ended quickly, however, when Brooke found out Nick had a one night stand with her daughter Bridget.

Nick became furious and out for justice against Stephanie and the Forresters when he heard that Stephanie had thrown his mother over a balcony during an argument. He gave them an ultimatum: give him Forrester Creations or he would make sure that Stephanie went to jail. The Forresters gave Nick their company and it became a subsidiary of Marone Industries. He broke into Stephanie's house threatening her and taunted her that until the day she died he would own her company. Undaunted he made Donna Logan the Face of Forrester and settled in as the new owner.

An out of control and despondent Nick began therapy with Taylor Hayes. Unwilling to open up during their unofficial therapy sessions at first, he eventually did, pouring out all the unhappiness and frustration he had experienced while growing up with a mother who was selling herself to man after man. Stephanie overheard this and arranged for the media to learn about Jackie's background at the next Forrester Fashion Show.

Nick was removed from the CEO spot at Marone Industries. Nick moved quickly and before Eric could reclaim his company, Nick sold his Marone stock and purchased Forrester Creations greatly angering the Forrester family.

Taylor became free and Nick and she fell in love and became engaged. Brooke's engagement to Ridge ended and she tried various ways to win him back. Although tempted and still in love with Brooke, he decided to stay with Taylor whom he also loved and felt would give him a new beginning. They immediately decided to have children and were devastated when Taylor was unable to get pregnant. Bridget helped Taylor conceive by artificial insemination from an anonymous egg donor. Jack Marone was born early to a grateful and ecstatic couple.

In a happier frame of mind he decided to sell Forrester Creations back to Eric with the condition that he divorce Stephanie and remove her from the company. Eric agreed and they made the deal.

All seemed perfect until Bridget discovered that there had been a mistake in the lab and her mother Brooke's eggs had been implanted in Taylor, making Brooke Jacks biological mother. Taylor became unbalanced and started hallucinating. When Nick admitted to her that he still loved Brooke, she fell further into depression and left him. Back at her home, Taylor continued to hallucinate and drink. Nick, feeling he had no other choice, sought full custody of Jack and won. Nick was certain that now he and Brooke could be together and raise their child, but she turned him down and stayed with Ridge. Bridget felt a strong pull toward Jack and started helping Nick raise him. This drew them closer and, deciding that he wanted another chance with Bridget, Nick proposed to her. Despite her original hesitation, Bridget said yes and they remarried on July 14th.

Katie Logan was also helping with Jack and Katie and Nick began to have strong feelings toward one another. After Katie was shot, Bridget invited her to recover at their home. When it looked like Katie was dying, at Bridget's request Nick took her on a cruise to Catalina Island; after an emotional episode where Nick helped restore Katie's will to live, they made love. Although Katie didn't die and recovered, they decided to keep the events of that night a secret until Katie found out she was pregnant. Nick decided he had to tell Bridget and, during a get away evening on Nick's boat, told her about Katie's pregnancy. Bridget was furious; she told Nick that she wanted nothing to do with him, moved out and sought a divorce. Nick and Katie were devastated but hopeful that things would work out with Bridget.

Taylor came to Nick and tells him that she can not bond with their child and, after a lot of soul searching, had decided to give custody to Brooke. Nick was shocked and tried to talk her out of it but Taylor was adamant.