<P> Haley also becomes friends with Peyton, who she initially disliked, and counsels Peyton as she and Lucas find themselves caught up in a love triangle with Brooke Davis . Although Nathan's mother, Deb is fond of Haley, she faces hostility from his father, Dan . When Nathan becomes involved in Dan and Deb's messy divorce, Haley suggests that he emancipates himself from them . After doing so, Nathan moves into his new apartment . </P> <P> One morning, Haley comes over and Nathan notices that she has gotten a tattoo of his jersey number, 23, on her lower back and this leaves Nathan wondering why Haley still won't sleep with him . Haley has always vowed not to lose her virginity until she is married and Nathan comes to respect that, while he and Haley acknowledge that their relationship has taken on a new dimension--they have fallen in love . However, when Haley discovers that Nathan has been surfing porn on the internet, she feels insecure about a sexual relationship once again, until Nathan declares his love for her in the rain . Meanwhile, Lucas tells Haley that he has decided to go and live with Keith in Charleston and Haley is saddened that her best friend is leaving . When Lucas comes to say goodbye to Haley, he is surprised to discover that Haley slept with Nathan in spite of her wish to be a virgin until marriage . She explains that she did wait; Haley and Nathan got married the night before . </P> <P> As their marriage continues, Haley and Nathan seem to encounter more and more hardships as a young couple, realizing that their marriage might hinder their dreams; Nathan's dream being basketball and the NBA, and Haley's dream being music . With the arrival of Haley's older sister, Taylor, the couple has their first big fight, as it is revealed that Nathan lost his virginity to Taylor his freshman year . Also with the arrival of Chris Keller, a conceited albeit talented musician, the problems in the marriage are escalated, due to Nathan's jealousy and distrust of Chris . As Haley and Chris begin to spend more and more time together, recording a duet of Ryan Adams' "When the Stars Go Blue," they realize that they have a strong musical connection . This, of course, angers Nathan even more, especially when he realizes that Chris' feelings for his wife are not exactly platonic . </P> <P> When Haley is offered a once - in - a-lifetime opportunity to go on tour with Chris Keller, The Wreckers (Michelle Branch and Jessica Harp) and Gavin DeGraw and after confessing that she kissed Chris, Nathan is outraged and gives Haley an ultimatum; if she goes on the tour, their marriage is over . Haley is hurt and ultimately decides that she needs to follow her dreams . She reluctantly accepts Chris' offer, unlike Nathan who had refused his dream of attending High Flyers (earlier in the season), an elite basketball camp just to be with his wife . Haley's leaving sends Nathan on a downward spiral, but Haley fulfills her dreams by building a music career and by performing her songs in front of huge crowds . </P>

In one tree hill what episode does haley get pregnant