Disclaimer: I don't own One Tree Hill or any of the characters.

Nathan is married with Rachel, but he doesn't love her anymore. However, they are still together because she doesn't want him to leave and he doesn't want to fight. One day he meets Brooke and they have an affair for a few months. Then Brooke starts dating Lucas, but she found out she's pregnant. Brooke and Lucas stay together only until the baby is 6 months. But everyone, including Nathan and Lucas, think that Lucas is the father. Brooke is the only one to know that it's Nathan. Lucas doesn't play a part in the child's life. Four years pass and Brooke is dying from cancer. She decides to tell Nathan the truth so that her child can have a family. In the meantime, Nathan and Rachel got divorced and he is now with Haley.

In this story, Nathan and Lucas are not brothers, they are not related at all. But Peyton is Brooke's sister, she's married to Jake and they have a daughter, Jenny who is around 8 years old. It's obviously AU.

Prologue

Brooke Davis was dying. When the doctors diagnosised her cancer they told her she had six months left to live. It was two years ago. But now she was feeling weaker each day. Her entire body hurt and she even cringed every time her four-year-old daughter, Mary, hugged her. The little girl didn't understand what was happening and she was confused every time her mother pulled back. She couldn't understand why her mother wouldn't hug her. Mary.It was Brooke's worst fear. What was going to happen to her little girl once she was dead? She didn't want to leave her daughter. Who would take care of her? It was then that brooke decided that she should tell Nathan the truth. Nathan. They had been together a little less than five months and then she had met Lucas, whom she told was Mary's father, even if she had later pushed him away. Her daughter's birth certificate mentionned Lucas as the father.

It was the 8th september. Brooke called Nathan and asked him if he could come to see her. It wasn't really unusual. They had seen each other a few times, in a friendly way, in the last four years.

Later that afternoon, Brooke and Nathan were sitting in her living room, while Mary was taking a nap.

"Nathan, there is something I need to tell you. Actually, I need to tell you two things." Brooke finally said.
"Sure go ahead." he responded.
"It's kinda hard to say. Two years ago, I was diagnosised with cancer"
"What? Brooke..." Nathan didn't know what to say. "But there's a treatment, right"
"No"
"But"
"I'm dying, Nathan. I can't fight it anymore. I even lived longer than the doctors assumed, but I have no force left." she smiled weakly.
"Brooke, I'm sorry. Wait, and what about Mary"
"It's the second thing I wanted to talk to you about." Brooke stopped a few seconds. "Mary is your daughter"
"What?" Nathan was flabbergastered.
"You are Mary's father"
"But...Lucas"
"I lied"
"Does Lucas know"
"No...Nathan I'm sorry I never told you"
Nathan didn't know how to react.
"I have a daugter." was all he could say.

So this was the prologue. Hope you liked it. I know there was no naley, but don't worry it will come, that was just the beginning.
review and I'll ud.