In their case they don't share the same birthday, Lucas is older by 3 months and they don't have the same mom only the same dad.
Lucas Scott is the son of Dan Scott and Karen Roe, and the nephew of Keith Scott; he has a younger half brother, Nathan Scott, on his father's side and a younger half-sister, Lily Roe Scott, on his mother's side (she is also his cousin through Keith).
James Lafferty was close in age to his 16-year-old character Nathan Scott as he was cast when he was 17. Lafferty stayed on the series for all nine seasons and aged in line with his character. He is currently engaged to fellow actor Alexandra Park.
Chad Michael Murray was 21 when he started playing Lucas Scott, a 16-year-old junior in high school. During the fifth season, the series jumped ahead four years, aging Lucas up to 22.
What grade are the characters in throughout the series? It is commonly said that Season 1 takes place during the first semester of their Junior years in high school, while Season 2 takes place during their second semester as Juniors.
Caleb McLaughlin as Lucas Sinclair
Character age: Born in 1971, Dustin was 12 in Season 1, 13 in Season 2, 13 or 14 in Season 3, and will be 14 or 15 in Season 4.
As the youngest, Noah Schnapp was 10, about to turn 11, when filming began on season 1. Lucas is, you guessed it, 12.
At the end of the first Season Nathan and Haley decide to get married at the age 16.
Lucas decides he's going to be the father Dan wasn't, but he thanks Dan for letting him see how he felt with him. As Lucas vows to be there for her, Brooke reveals the doctor told her she isn't pregnant and she lied about it to hurt Lucas for kissing her best friend.
2x23 - Lucas confesses his feelings for Brooke before she leaves for the summer. 3x02 - Lucas tells her he plans to fight for her and wants a real relationship although she wants a non-exclusive thing because she doesn't trust him.
Nathan Scott (James Lafferty) is paralyzed and bitter after his dreams of playing professional basketball were crushed in a bar fight.
Renee Richardson was a woman who claimed to have slept with Nathan Scott during his first NBA season on the road, despite his marriage to Haley James Scott.
Lucas Blye is an intelligent 14-year-old high school student in suburban Chicago. He becomes acquainted with Maggie, an attractive older girl who has just moved to town.
His genetic heart disease
Lucas had a heart condition and this was used to further his characterization.
Nathan and Lucas share the same father, Dan Scott, but they live apart: it is suggested that Dan abandoned Lucas and his mother, Karen Roe, when Lucas was born, preferring to marry Deb Scott, with whom he had Nathan.
They eventually started a relationship, but they later broke up after Lucas cheated on her with Peyton because his feelings for her were too strong.
Despite a brief separation in the seventh season, Brooke and Julian were married in season eight amid the heartbreaking news of her inability to have children. Much to their surprise, however, Brooke gave birth to twin sons Davis and Jude Baker later in the season.
Nathan gets a call from a Duke University and as he is offered a scholarship, he yells for Haley to tell, but as he does, Haley blurts out that she is pregnant. She tells him she has known for a few weeks but didn't know how to tell him.
Despite many obstacles, including Nathan's parents, third parties and their always conflicting dreams, they're still happily married and have made it through thick and thin. Nathan and Haley are soul mates and are one of the strongest couples in television history.
But after One Tree Hill's impressive run, The CW decided to pull the plug after the shortened ninth season. Ratings played a major role in the show's cancellation decision. There was a small increase in viewership with the time jump but, after that, the number gradually decreased year to year.
Dan and Deb conceived Nathan in November after Dan found out in September that Karen was pregnant. So that means Lucas was conceived in August. They are half brothers because they share he same father and they are 3 months apart not 7 months apart. Are Lucus and Nathan Twins.
Lucas's age was never officially confirmed but is often assumed by fans to around 11-13 years old. In Earthbound 64, Lucas and Claus were supposed to be only 7 years old pre-timeskip and 17 post-timeskip. Throughout development of Mother 3 for the GBA, the timeskip was changed to be 3 years.
Natalia Dyer as Nancy Wheeler
Nancy Wheeler is battling Vecna and her senior year of high school during Season 4. That puts her at around 18. Natalia Dyer is 27.