Disclaimer: I do NOT own One Tree Hill. No copyright infringement intended.
This video is basically more from Brooke's P.O.V.
Basically, her and Lucas use to date, she found out he cheated on her with a bartender, Nikki. Although she doesn't know the full story of him and her best friend Peyton. She see's him and Peyton in the car but doesn't think much of it as Peyton is Lucas's old friend and would never betray Brooke like that.
Throughout the video, Lucas tries to win Brooke back whilst he is still sneaking around her back with Peyton.
Brooke finally see's them two together and see's how he acts with all the other girls.
She then realises he will never be back in her heart as he has hurt her too much with all his lying.
Hope you like it. :)