In Gossip Girl Season 2, Episode 4 it turns out that Grace's adultery went further and deeper than anyone suspected.

Grace is caught cheating on Obie (Eli Brown) with her ex-boyfriend Matias at the end of Episode 3. (Javier Reyes Sanchez). Grace told Matias in Episode 4 that she pretended to date Obie just to make her mom happy. The poor guy had no idea.

See Also: Gossip Girl - Season 2, Episode 3 Recap

Once JC discovers Grace and her lover, the secret is out. Grace makes a significant misstep by coming clean to JC about her infidelity. JC had tried to subtly get Grace to cave under pressure about the affair.

Together with Luna, JC creates a scene at the Valentine's Day party. This was an effort to shield her ex-boyfriend from harm and win back his friendship.

She asks Matias out as her date to make Grace feel awkward and to reveal their relationship. JC also invites Grace's mother and brother, and the truth came out when Grace's mother saw Matias chatting with Grace.

Grace's double-cheating on Obie with Matias and her brother sleeping together was a shocking turn of events.

It's true that the world never sees what happens in the privacy of one's own home. But for Monet de Haan, her parents' marital problems and her father's affair were all over Gossip Girl.

When Monet's claimed father's lover, Jennifer, shows up to her party with her parents, Monet is taken aback.

There was widespread parental approval for the romantic and sexual liaisons between Jennifer and both of Monet's parents.

Monet's mother put her in her place again. She criticizes her for causing a commotion in public and questioning her life choices. However, she still gets to live how she wants to, leaving Monet feeling more helpless than ever.

Shan overhears Zoya's dad and JC's dad, Davis discussing their money situation over the phone towards the end of Episode 3.

Davis, who has accusations of sexual assault, is footing the bill for Nick's flat. He has kept this a secret from JC and Zoya.

When Zoya screams at Shan and blames her for all the drama in her life, Shan finally decided to reveal the truth.

When Zoya finds out that Shan kissed the boy she has a crush on, Shan tells her the truth about her father. The fact that the information was leaked on Gossip Girl only made things worse for Zoya and her family.

On Valentine's Day, Kate and Mike changed their friendship into romance by resolving their sexual tension and getting intimate.

Fans are wondering if Mike's affections for Kate are genuine after the events of the third episode, where it appears that he thought Kate was Gossip Girl.

While Mike was out of his room in Season 4, Episode 4 for a drink of water, an unknown number texted him, asking if he was about to reveal the identity of Gossip Girl. The message he sent back read, "I'm getting closer, don't worry," and Kate could hear him say it from the kitchen.

Is Mike's sex with Kate just a professional move to get closer to Gossip Girl, or has he mixed business with pleasure and developed an affection for her?

To be sure, it appears like Gossip Girl's secret identity is in jeopardy.

And what will Kate do after that?

Gossip Girl Season 2, Episode 4 is available for streaming on HBOMax.