One Tree Hill, Season 5

Lindsay:
[reading from Lucas' second book] It was more than just a comet because of what it brought to his life: direction, beauty, meaning. There are many who couldn't understand, and sometimes he walked among them. But even in his darkest hours, he knew in his heart that someday it would return to him, and his world would be whole again... And his belief in God and love and art would be re-awakened in his heart. [drops the manuscript into her lap]

Lucas:
Linds.... It's just a story... So what, Peyton's car is a comet you know... This is crazy! I love you.

Lindsay:
I love you too, Lucas, I do and I always will. But your heart's conflicted and... I think I've always known it. I guess I was hoping someday... I could be your comet. [Sets the manuscript aside] It's an epic love story, Luke. But it's just not ours. [Takes her ring off and puts it on the manuscript] And neither is this.

Lucas:
Lindsay, please, you can't just leave.

Lindsay:
People always leave Luke, you of all people should know that.