The producers were originally unsure as to who Murray would play.Series creator Mark Schwahn wanted him to play the character of Nathan Scott since Murray had played a bad guy several times before, he felt it was only natural to give him this role.
After Peyton temporarily turned down his proposal because she told him she was not ready, he begins dating his book editor Lindsay and gets engaged.
Peyton returns to Tree Hill to get him back and after Lindsay realizes Lucas still loves Peyton she leaves him at the altar.
I'm convinced I got the chance to be on One Tree Hill because I did a guest thing on Dawson's Creek as myself, when the cast appeared at the MTV Beach House." She added, "And my only scene was with Chad Michael Murray (Lucas Scott). He and Nathan started on bad terms but later become close brothers. He had to quit playing sports after he found out he had a genetic heart problem, inherited from his father - this meant he had more time to focus on writing.
He was involved in a complicated love-triangle between Brooke and Peyton, but eventually realized Peyton was the one for him.
Lucas tells Peyton he hates her and wishes she never came back to Tree Hill because she ruined his life.
They later make amends and get married and have a daughter "Sawyer Brooke Scott".After that, characters from that first season left the show, with new main characters having been both written in and out of the series.Originally, it followed two half-brothers Lucas and Nathan Scott who started out as enemies but later formed a close bond as brothers.After waiting for Haley to go into labor, Haley gives birth to Lydia Bob Scott.In season nine, he is traveling a lot as an agent but when returning to Haley, Jamie and Lydia he is taken by some people that are getting paid to kill him.Murray's mother left him when he was young, and Lucas was abandoned by his father .