<P> Nathan decides to move home and Dan pays his medical bills in exchange for Nathan getting an annulment from Haley . Whitey offers Nathan the opportunity to go to "High Flyers", a prestigious basketball camp, for the summer but Dan tries to talk Nathan out of it, blaming him for Deb's addiction . When Deb learns of this, she and Nathan agree to leave Dan and make a fresh start . Nathan is annoyed that Lucas has been investigating Dan even though Nathan asked him not to . Nathan disowns his brother and moves back home with Deb . In the last episode (s), someone drugs Dan and sets fire to the dealership . </P> <P> Nathan goes to the door and there stands Haley . She returns to Tree Hill for good, but Nathan has not yet forgiven her or Lucas . Nathan learns that Haley is suffering musicians' block and pays Chris to come back to Tree Hill and help Haley with her music . Nathan and Haley grow close again and eventually have make - up sex and get back together . Dan is crowned Mayor of Tree Hill and Deb tells Nathan that she started the dealership fire in an attempt to kill Dan; Nathan is angry with his mother and sends her away for a while to get her life in order . After some inspirational words from Lucas, they gradually begin speaking again, before making up properly . When Jimmy Edwards brings a gun to school, Nathan races inside to find Haley . They are held hostage in the Tutor Center and the deaths of Edwards and Keith leave Nathan and Haley realizing that life is too short . They move back in together and Nathan asks Haley to' marry' him again, to renew their vows . </P> <P> While planning their (second) wedding, they receive a visit from Nathan's uncle from his mom's side, Cooper, but are dubious about his relationship with the younger Rachel . Deb returns and she and Nathan take out a restraining order against Dan, which Nathan initiating, while Nathan beats old "High Flyers" rival Damien West in an all - important game . On the morning of his wedding, Nathan is traumatized following a nightmare where Haley was drowning and he couldn't save her . He gets Lucas to keep a close eye on Haley but all goes well and they renew their vows, though Rachel causes a scene at the reception over Cooper sleeping with her despite her age . Nathan and Haley head to London for their honeymoon and Haley has something to tell Nathan but before he gets to hear it, they have a near - collision with Cooper and Rachel (in the wedding limo) on the Mollina Bridge . Nathan dives into the water to rescue his uncle but becomes trapped and is left gasping for air and fighting for his life . </P> <P> Nathan wakes up in the hospital and is hailed as a hero for saving Rachel and Cooper . However, Nathan does not believe that he did save them - he thinks Keith did as he believes he saw Keith in the water . Rachel develops a crush on Nathan for him looking like Cooper and sets out to seduce him, using his confusion over Keith to her advantage . What Haley had wanted to tell Nathan while they were driving to the airport on their (second) wedding day, was that she was pregnant . Finally, she tells Nathan on the same day that he gets a scholarship to Duke University . He is initially annoyed that she kept it from him, but is later delighted and tells Rachel that she never had a chance with him . Nathan and Haley face even more money difficulties now that they have a baby on the way and when Dan refuses to help, Nathan turns to a loan shark, Daunte Jones . He provides Nathan with money in exchange for Nathan losing the State Championship . He plays badly, causing his team to trail behind drastically in points . Haley talks with him and reveals the sex of their baby by saying "...as long as you're a good husband and father...to your son . It's a boy, Nathan, you're gonna have a son!" Nathan decides to play his best for his son, and the Ravens win the championship with Lucas scoring the winning shot . </P>

Who saved cooper and rachel at the river