<P> The new couple make a slow and rocky debut on the Upper East side and are faced with numerous challenges including their relations in the bedroom, Blair's lingering feelings for Chuck, and Serena's distaste for their relationship . When Gossip Girl intentionally exposes Blair's secrets on Gossip Girl, Dan comes to terms with Blair's feelings for Chuck, as well as Serena's attempts to sabotage their relationship . In the finale, Dan, having been left by Blair for Chuck, teams up with Georgina in order to write his follow up to "Inside". This time, however, he pledges to write the novel "he should have written from the beginning ." Georgina, with her own score to settle with the Upper East side, is more than happy to help . </P> <P> In Season 6, Dan tells Serena that the reason he didn't give her an answer to the "I love you" was because it was easier to focus on his anger at Blair, than to face the possibility of getting what he always wanted in the fear of losing it again . Dan and Serena throw their first Thanksgiving as a couple together, where Serena affirms her love for Dan by rejecting both Steven and Blair by saying that Dan is her soul - mate and the only love of her life . Dan also solidifies his love by telling Georgina and Rufus that he had a plan all along to win and that there is no winning without Serena . </P> <P> In the finale, Dan reveals to Serena their first meeting at a party, where Dan first spoke to her and fell madly in love . Dan realized at that party that he could never pull Serena out of her world but he couldn't give up either . He realized that the only way he could get Serena was to write himself into the Upper East Side drama by using a blog to create a legend; the blog came to be known as Gossip Girl . Dan then revealed his secret to all by giving Nate his final chapter to publish in the struggling Spectator, revealing to all that the only purpose of Gossip Girl was the love he had for Serena . Serena was overjoyed at the revelation, stating that Dan, through Gossip Girl, had written her and everyone else a seven - year love letter and made her realize that she belongs in the Upper East Side with Dan . </P> <P> Five years later, Dan and Serena get married, surrounded by their closest friends and family . </P>

When does dan admit he is gossip girl
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