By People Staff
Updated November 05, 2008 12:00 AM
Credit: Art Streiber/The CW; Patrick Ecclesine/The CW

On Tuesday’s episode of 90210, in between Election Day news interruptions, Principal Wilson (Rob Estes) sat down with his wife, who deserves couture for the amount of understanding she has exhibited, and two kids and came clean, telling them he had another son that he didn’t know about until two months ago. Annie (Shenae Grimes) and Dixon (Tristan Wilds) had nothing to say except they were going to be late for school.

While Annie was freaking out, Naomi (AnnaLynne McCord) took it in stride and pointed out that they were sisters. Hmm, neither of them share a parent, but they share a brother. Does that make them half-siblings? Totally confused. In an effort to make nice, Silver (Jessica Stroup) invited Naomi and Adrianna to her slumber party, which ultimately turned into a full-blown house party.

Naomi and Ozzy shared some time together on the front porch. Ozzy told Naomi he doesn’t play games and Naomi looked shocked. Does she know any other way? Meanwhile Adrianna (Jessica Lowndes) and Navid (Michael Steger) found themselves upstairs making out. Adrianna was ready to go all the way when Navid realized she felt obligated because he paid for her rehab. Adrianna delivered the best line of the night: “There’s no such thing as a free lunch.” Heartbroken, Navid walked out. The next day, Adrianna apologized and the pair became West Beverly’s newest couple.

Speaking of couples, the school’s hottest English teacher, Mr. Matthews (Ryan Eggold) was forced to take a leave of absence from school after he was spotted kissing his newest student outside of Silver’s party. Actually, the student is a 25-year-old narc officer, but the kids don’t know that yet.

While most of the students returned to their regularly scheduled routine, Annie was recovering from a hangover. After scolding her father for lying to her about having another son, she told Ethan (Dustin Milligan) that she couldn’t lie to Naomi any longer about their relationship. Because they’re sisters?

Tell us: Who is the best couple at West Beverly?Art Streiber/The CW; Patrick Ecclesine/The CW