Dean's with Haley but cheats on her with Veronica.

After saving Veronica's life, her dad dies, her mother struggles with alcohol and leaves. Only person left; Sam Winchester. They're best Friends but Sam always thought they could be more. Turns out, Dean and V share a past.

Dean told Veronica that it was finished between them. Veronica accepted this but, as the days go by, Deans regrets his decision and begins being aggressive...

In the present Veronica is dead and through the black and white scenes of the past, Dean shows us that she gave her life up to save him from hell.

Dean and Veronica had a child name Jamie. Dean's life was cut short when a demon killed him. Veronica had to raise Jamie all da herself. Sam was near and helped her out but always wanted più with Veronica though. It's always been Dean to her.

dean and veronica have been dating but he has been quite cold to her recently. So Dean tries to re-start their relationship.