<P> Though many relationships in her life are going poorly, Haley is able to reconnect with Lucas, whose forgiveness is much more easily achieved than Nathans' . As they are able to re-establish their foundation as best friends, Haley and Lucas begin their senior year the same way they had begun their junior year; united against the world . Haley is one of the few people who knows about Lucas's HCM, and pleads with him to stop playing basketball . Concerned for his safety, she threatens to tell Whitey Durham, Lucas's coach, about Lucas's heart condition unless Lucas tells him himself . </P> <P> Nathan and Haley get closer and eventually get back together and have make - up sex . Later on, after a slow process, Nathan and Haley realize that they love each other too much to let their marriage die and begin to re-establish their relationship as a married couple . Having many things yet to discuss, and many obstacles yet to overcome both Haley and Nathan reunite . She also reconciles with Peyton, who admits that she was taking her frustrations out on Haley because, out of everyone who has left her over the years, Haley is the only one who came back . Haley finally finds a way to balance her love for Nathan and her love for music and records Halo for Peyton's Friends With Benefit CD, promoting breast cancer awareness . </P> <P> When troubled teen, Jimmy Edwards, brings a gun to school, Haley and Nathan end up trapped in the tutor center with him during the shooting . After the death of Keith Scott they realize how they need each other and decide to move back in together . During a weekend getaway at a friend's cabin, Haley ecstatically accepts Nathan' proposal to renew their marriage vows in front of all their loved ones . The wedding takes place in the season three finale, along with a shocking cliffhanger in which Haley might be pregnant and Nathan' fate is unknown . The episode ends with Haley's calling for help . </P> <P> During the premiere of season four, Brooke was viewed as being the one pregnant, but after a few episodes, it was discovered that Brooke was covering for Haley's pregnancy . When Brooke finally told Haley she couldn't pretend to be pregnant any more, Haley realized it was time to face Nathan and tell him about their baby . Because of Haley's and Nathan's debt, she's been working shifts at Karen's Cafe and has been tutoring Rachel in Calculus . On the day of the State Championship game Haley is found on the bathroom floor in pain, the other girls including Rachel, Peyton, Bevin and Brooke rush her to the emergency room . The doctor told her she would be fine but it was stress causing her problems, and told her she was having a son . After the State Championship game, Haley jumped in the way of a car that was about to hit Nathan . The car was being driven by Daunte, as revenge for Nathan's betrayal after he was lent money . After a string of operations, she was fine and to her and Nathan's delight, they find that the baby has a heartbeat of their son . After Nathan tells her what he did, she freaks out and leaves; but eventually forgives him . He then buys her a maternity prom gown after winning the stripping contest . </P>

When does haley find out she's pregnant
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