Gallery: 8 Celebrities We Didn’t Know Were Married

Thousands of hearts broke this year after we were introduced to the classically handsome Arm & Hammer heir through The Social Network... then he promoted the movie with wife Elizabeth Chambers. It's unfair--we didn't even know he existed, and now he's indefinitely off the market.

Emmy's fans were sad enough to learn that she and longtime boyfriend Justin Siegel were breaking up in 2009... then we learned that Emmy and Justin had actually secretly gotten married back in 2007. At the time, Perez Hilton reported that a source close to the couple explained, "Emmy and Justin decided to keep that part of their relationship a secret and out of the media spotlight. They wanted to keep it private in order to prevent their marriage from coming under scrutiny."

Channing and wife Jenna Dewan seem to be one of the rare showmances that work: They met while filming 2006's Step Up but didn't get married til about three years later in 2009. And while they got matching tattoos on their honeymoon, it wasn't each other's names or something they might regret in the case of a divorce; instead, they got "side by side" (in Balinese), a phrase mentioned in their vows.

They also really like to get dressed up for Halloween, as this picture illustrates.

There's this funny assumption we make, when an actor is first breaking in to the biz, that his relationship must match his level of experience on IMDb. So imagine our surprise to learn that Adam Scott, who's just now getting much-deserved exposure for Parks and Recreation, has been married to former Jimmy Kimmel Live! writer Naomi Sablan for quite some time.

This marriage wasn't secret so much as Freida wasn't famous when it happened: Before she became a star with 2008's Slumdog Millionaire, she got hitched to Rohan Antao. But rumor has it that she dropped him when she fell for co-star Dev Patel; at one point, she and Rohan got divorced, and she and Dev are still going strong.

Olivia is the classic example of a celebrity whose marriage we learned about only when the divorce proceedings began. The reveal hasn't made her husband Tao Ruspoli any more famous; the filmmaker is puttering along in life and will probably fade from the general consciousness once their divorce is finalized.

This is a two-for-one since they're both famous. Part of the reason we had forgotten about this marriage was that a) when you think of R. Kelly's love life, it's mostly about the allegations that he had sex with a teenage girl, and b) the thing we remember most about Aaliyah is her tragic death in a plane crash in 2001.

But in the mid-'90s, it came out that the then up-and-coming singer Aaliyah had secretly gotten married to her mentor (and songwriter on her debut album Age Ain't Nothing But a Number) R. Kelly. The two denied it since she was only 15, but Vibe magazine published their marriage certificate. Because Aaliyah had listed her age as 18, the marriage was declared illegal.