* Naomi and Liam break up. Naomi is heartbroken but eventually finds solace in a rebound relationship with Adrian. Liam is left to grapple with his feelings for Naomi and struggles to move on.
* Annie and Dixon reconcile. After a season of drama, Annie and Dixon finally reunite, and Annie's feelings for Dixon solidify after she realizes her love for him is more powerful than her fear of hurting his family.
* Silver and Teddy get engaged. Teddy proposes to Silver, but she initially hesitates due to her feelings for Dixon and her fear of commitment. The episode ends with Silver ultimately accepting the proposal, leaving the future of her relationship with Dixon in uncertainty.
* Navid and Silver's friendship is put to the test. Navid is heartbroken after Silver accepts Teddy's proposal. They have a strained relationship, and Navid begins to question their friendship.
* The gang graduates high school. The entire group attends their graduation ceremony, marking a significant milestone in their lives.
The season ends with several major cliffhangers:
* Adrian's true intentions remain a mystery. He is revealed to have a connection to Naomi's mother, leaving viewers wondering if he's really who he seems.
* Dixon's feelings for Annie are complicated. He tries to move on but still carries a torch for her, making his relationship with Silver even more complex.
* The future of the gang's relationships is uncertain. The season finale leaves viewers wondering if the characters will be able to navigate their newfound complexities and remain friends.
Overall, the second season of 90210 ends with a sense of change and uncertainty, setting the stage for a dramatic third season with new challenges and opportunities for the beloved characters.