2013 has not been a good year for love in Hollywood.

One day after it was reported that Michelle Williams and Jason Segel had split, Rachel McAdams is a single lady again.

According to Us Weekly, the 34-year-old actress broke things off with her Midnight in Paris co-star and beau of more than two years Michael Sheen.

Just last week, Diane Lane and Josh Brolin made their split official by filing for divorce after nearly a decade together.

“He’s great . . . you know, everything is mutual. It’s all okay,” Brolin’s father James told PEOPLE this week.

Having trouble keeping track of all the breakups in Hollywood so far this year? Celebuzz has rounded up 10 of the biggest, most shocking and predictable (sorry, Taylor Swift) splits of 2013.

Click on the gallery, above, to see who’s split up in 2013. Then tell us: who do you think will head to splitsville next?

If the original trailer for 1978′s Superman made you believe a man could fly, the new trailer for Zack Snyder‘s Man of Steel will make you believe that that man can fly and kick lots of ass.

A new trailer for Warner Bros. new Superman reboot, produced by The Dark Knight‘s Christopher Nolan and starring Henry Cavill, has arrived, complete with death rays, burning cities, caped figures and soaring superheroes. Also: Kevin Costner. How good is it? Read on to find out…

In addition to the film’s epic scope, the trailer definitely drives home Snyder’s grounded and gritty take on Superman, seemingly going a very Batman Begins route – especially in terms of exploring young Clark Kent’s relationship with his parents, Jonathan (Costner) and Martha (Diane Lane).

Unlike previous Superman movies, the Kents seem to play a more prominent role than usual, one that casts them in a darker-than-expected light when dealing with their adopted son and his powers. Case in point: Following a scene in the trailer where Clark uses his powers to save a school bus full of kids from drowning, Jonathan confronts Clark about the young passenger who witnessed Clark’s heroics.

“Should I have just let him die?!” Young Clark asks.

“…Maybe,” Jonathan grimly replies.

How much darker will Superman get? We’ll find out when Man of Steel lands in theaters June 14, 2013. The trailer arrives on December 14, attached to prints of The Hobbit. Watch footage of Cavill in action as Superman below!

Before the madness of the VMAs, celebs like Vanessa Hudgens, Kelly Osbourne and breast cancer survivor Christina Applegate used their starpower for a good cause: raising money at Friday night’s Stand Up 2 Cancer telethon.

Desperate Housewives star Marcia Cross (whose husband suffered from cancer) and former American Idol singer David Archuleta also turned up for the star-studded charity event. Officials said they would announce the fundraising total this week. The 2008 Stand Up 2 Cancer telethon raised more than $100 million.

Click here for more photos from Stand Up 2 Cancer. Who’s your favorite celeb fundraiser? Let us know in the comments!

• Is The Twilight Saga a tool for subtly indoctrinating kids into the Mormon faith? Don’t be silly—it’s an Illuminati propaganda manual planted among us thousands of years ago by an an advanced alien race. (Huffington Post)
• Courtney Love delivers poignant memories of her career on her Behind the Music segment. Just kidding; she tosses F-bombs left and right like Al Qaeda is closing in on her. (PopEater)
• Is Josh Brolin giving his wife Diane Lane some PDA, or performing the Heimlich Maneuver on her? You decide! (Wonderwall)
• What’s more pathetic than camping out for days waiting for the Eclipse premiere? Camping out for days to report on people who are doing so. (Hollywood Life)
• John Lennon + sexy garters = Taylor Momsen. Just let that mental image sink in for a while. (Starpulse)

Sounds like there might be trouble in the four-year union between Josh Brolin and Diane Lane.

In Touch Weekly reports that Milk actor Brolin—currently in New Orleans filming the comic-book movie adaptation Jonah Hex—has been spending a perhaps-inappropriate amount of quality time with local woman Melissa Green while he’s in the Big Easy.

According to sources, Brolin was spotted partying with Green at the Royal Street Inn on May 21 until 11:35 p.m., at which point the two moved on to another location.

The next morning at 7:23 a.m. the two were spotted together again.

“Josh looked like he hadn’t slept at all,” a witness tells the magazine. “[Green] was wearing the same outfit as the night before and looked embarrassed.”

Duhn-duhn-duhn!

Of course, it’s possible that Green was helping Brolin practice lines all night, right?

If Josh really does have a wandering eye, poor Diane may be in for a world of hurt. Brolin is co-starring in Jonah Hex with Transformers hottie Megan Fox, and resistance to her charms is pretty much futile.

Readers, have your say in the comments section: Do you think Josh Brolin and Diane Lane’s marriage is in trouble?

How fortuitous that star couples of all kinds showed to last night’s San Francisco premiere of Milk, just in time for a vote on Proposition 8.

Several boldfaced pairs made rounds at the movie’s unveiling, most making up the powerhouse cast that retells the life of activist and city official Harvey Milk.

Star Sean Penn and wife Robin Wright Penn seemed right at home with one another hitting Levi’s official premiere after-party for the film. This year saw the filing of divorce papers for the couple, followed by an Oscar hiccup, then a reconciliation.

Wright, dressed simply in a black military jacket, greeted moviegoers and execs while Penn chatted up castmate Josh Brolin at the bash, held at San Francisco City Hall.

Speaking of Brolin, he put his own divorce speculation to rest (perhaps) by bringing knockout bride Diane Lane.

A source, however, tells Celebuzz that Lane “tired quickly,” of the red carpet, breaking from Brolin to wait inside. Another source says, Brolin and Lane arrived in seperate cars to City Hall after the screening in Milk’s original stomping grounds The Castro.

Looking smitten (again, at an opportune time) was Grey’s Anaotmy star T.R. Knight and his May-December love Mark Cornleson, who was studying hospitality at an SF college before ditching to Hollywood to live with his famous man.

Then came broodster James Franco who kept a sweet mystery blonde, done up in a seafoam halter dress, three paces behind whenever cameras were around. Also Emile Hirsch with a black-clad brunette who walked the carpet with the young actor but wasn’t at his side during the party.

Love all around, folks! That’s how famous photog David LaChapelle felt, overheard by Celebuzz singing the praises of the movie’s “amazing tone and performances.”

Also spotted milling around the party was director Gus Van Sant, toasting his 1970s-set movie which is drenched in Levi’s 501′s and unthinkable haircuts.

“This cast, this movie, represents all the ideals of Levi’s,” the denim co’s President Robert Hanson told Celebuzz, “…courage and youthful, provocative energy.”

Right he is about all the cast—provocative on screen and off.