It's the betrayal that has broken untold millions of Twihearts: Kristen Stewart, 22, issued a heartwrenching admission of infidelity Wednesday to People.com, after photos surfaced of the Twilight star kissing her Snow White and the Huntsman director Rupert Sanders. The news shocked fans of Stewart and her longtime boyfriend, Twilight co-star Robert Pattinson, 26.

STORY: Kristen Stewart Apologizes for Cheating on Robert Pattinson

Adding to the controversy is the fact that the 41-year-old Englishman has been married for seven years -- and raises two young children -- with Liberty Ross, a 33-year-old fashion model and actress who plays Stewart's mother in Hunstman.

Here are the 10 most significant developments yet in the unfolding megascandal that has everyone talking.

1. Caught Kissing on Camera (Tuesday, July 17)

A paparazzo snaps photos of the Hunstman star and director making out in a parked vehicle in Los Angeles. Another photo features Sanders kissing Stewart's neck as she turns her head, smiling.

2. Cozying Up at the Teen Choice Awards (Sunday, July 22)

All three attend the annual Fox ceremony at the Gibson Amphitheater.

3. Liberty Ross Tweets "Wow" (Tuesday, July 24)

Sanders' model-actress wife tweets one word -- "wow" -- just hours before the news breaks. Her Twitter account is later disabled.

STORY: 'Snow White and the Huntsman': What the Critics are Saying

4. Drunk Snow White and Instagram Rumors (Tuesday, July 24)

A rumored second post from Ross, this time to Instagram, features an image of Walt Disney's Snow White crying and drinking from a bottle on which a bird is perched (inset).

Accompanied is the caption, "Not so pretty or so pure after all ....." Ross' privacy settings are reportedly changed shortly after it goes up.

5. Us Weekly Releases the Story (Tuesday, July 24)

The neck-kissing photo is splashed across the cover of the celebrity weekly, in a story titled "KRISTEN CHEATS ON ROB!" Inside are the shots of the two kissing inside the car. Gossip blogs begin circulating the news that Stewart has cheated on Pattinson.

6. Twihards Revolt (Tuesday, July 24)

Stewart and Pattinson's passionate fanbase take to social media like Twitter and YouTube to decry what they consider a Photoshopped-enabled smear campaign against the actress.

7. Stewart Reads Mean Tweets on Jimmy Kimmel Live (Tuesday, July 24)

Poorly timed comedy: As part of the show's ongoing series "Celebrities Read Mean Tweets," Stewart reads, "I liked Kristen Stewart more when she was a boy," then adjusts her jeans.

STORY: Kristen Stewart Falls For Fashion, Disses 'Voracious, Starving Sh-t Eater' Critics in Vanity Fair

8. People Publishes Stewart's Apology (Wednesday, July 25)

The story is verified -- and blows up -- after Stewart issues a "heart-wrenching public apology" to Pattinson on the magazine's website. She calls the infidelity a "momentary indiscretion [that] jeopardized the most important thing in my life. ... I love him, I love him, I'm so sorry."

Shocked fans struggle to cope with the news.

9. Sanders Issues a Mea Culpa (Wednesday, July 25)

Us Weekly publishes this statement from the director on its website:

"I am utterly distraught about the pain I have caused my family. My beautiful wife and heavenly children are all I have in this world. I love them with all my heart. I am praying that we can get through this together."

10. Sequel in Jeopardy? (Wednesday, July 25)

The rumor mill begins to spin about the fate of the planned Snow White sequel, to which both Stewart and Sanders are reportedly attached.