Yesterday, People Magazine was the first to break the story of Jessica Simpson and Ton Romo’s split. According to their sources – who sound mostly like Romo friends – Tony dumped Jessica the night before his birthday, and Jessica was so upset that she cancelled her Ken-and-Barbie themed birthday party last Friday night. While Jessica tweeted on her birthday that she was going to fall asleep with her mom and her dogs, Tony Romo was hitting the town and flirting with every girl in sight.

Now that all of the other tabloids have gotten a chance to catch their breath, we have some new details on the break-up. It’s pretty much what you’d expect. Most people have Jessica Simpson totally ready for marriage and babies, while Tony was all “hell no”. Gatecrasher falls all over the “Jessica Simpson is a victim” thing, quoting a source who claims that Jessica know this time their split is for good. Unlike that time they split around Jess’s sister’s wedding, and Papa Joe had to step in and talk to Romo. So I guess Jessica’s dad isn’t going to step up and talk to Tony this time.

Jessica Simpson was excited to get all dolled up for her “Barbie and Ken”-themed birthday bash in LA on Friday night, but there was one problem: She had just lost her Ken. [She and] Tony Romo had split the night before her 29th birthday, causing a depressed Simpson to cancel her fete.

Jess didn’t make friends aware of the breakup and subsequent party cancellation until the afternoon of her big day – pal Emmy Rossum was still blithely tweeting at noon about her outfit for the shindig. Instead, the sad Simpson decided to spend the day not celebrating, but licking her wounds with her family and dogs.

“Jess was too heartbroken to have a big bash,” reveals a pal of the songbird. “She knows that she and Tony are broken up for good.”

It was Romo who called it quits, sources reveal. Although the couple looked happy just two weeks ago while attending a golf tournament in Bethesda, Md., the football stud was starting to get itchy about his freedom.

In fact, the night Romo was meant to be playing the perfect Ken, he was partying with a posse of guy friends at Hollywood hot spot MyHouse – and women were constantly stopping by his table. Says one clubgoer, “Tony was hanging out until 2 a.m. getting his flirt on. He was in great spirits and seemed very single.”

On Saturday, the player was again caught chatting up a bevy of ladies, this time poolside at the Roosevelt Hotel, also in L.A. While Romo may already be moving on, the split is harder for Simpson.

“Jessica was ready to settle down, and Tony was not,” says a second source. “He travels a lot for his games, and having a full-time girlfriend is a big commitment.”

Agrees the first pal, “They were heading in different directions.” Reps for both Romo and Simpson declined to comment.

[From Gatecrasher]

US Weekly has a good run-down on the history of their relationship. They met in November 2007, after Tony gave an interview claiming Jessica was his “celebrity crush”. Once together, Jessica sold the relationship well – she talked about Romo in nearly every interview, and US Weekly has compiled a sort of greatest hits. It just seems rather sad to me, but whatever.

Let’s see, who else has anything good? Life & Style has a friend of Jessica’s saying “They weren’t good anymore [and] fighting. He’s away a lot, she’s getting ready to work on a new project. It became obvious they just weren’t meant to be.” Meanwhile, a friend of Tony’s says, “I think he was acting like a single guy before he ever made it official.” US Weekly didn’t want to make Jessica into a victim, though. They had this quote: “They go from one fight right into another, without a second break. It’s always something with Jessica.” Seriously? Jessica seems dumb but not high maintenance.

I’m surprised at how many sources are pointing out that Jessica’s ex-husband Nick Lachey is back on the market too – it seems some people still want to see Nick and Jess get back together. However, most sources note that Nick and Jess haven’t spoken in years. Perhaps he’ll call her to commiserate? I doubt it. I don’t think Nick wants to deal with her again.

Jessica and Tony are shown out at a Lakers Game on 6/4/09. Credit: VAH/Fame Pictures