Ashton Kutcher Affair

Ashton Kutcher has finally pulled the trigger, filing for divorce from Demi Moore ... over a year after the couple split up ... and now we know why he waited.

34-year-old Ashton filed the docs today in L.A. County Superior Court, citing irreconcilable differences. He uses his full legal name 'Christopher A. Kutcher.'

Sources familiar with the situation tell TMZ ... Ashton waited so long because he wanted to give Demi the chance to file first ... it was a whole dignity thing. After a year ... when Demi showed no signs of making her move, Ashton finally did.

Ashton and 50-year-old Demi have no children together. They were married in September 2005 and separated in November 2011.

According to the docs, the property rights of Ashton and Demi will be worked out later.

Ashton and Demi split in the wake of cheating allegations involving Ashton and another woman. Ashton is currently dating his "That '70s Show" co-star Mila Kunis.

Ashton Kutcher and Demi Moore have taken NO steps to end their marriage ... TMZ has learned.

Sources connected with the couple tell us ... neither Ashton nor Demi have given their lawyers any indication they want to file for divorce.

We're also told -- contrary to several reports -- Demi and Ashton are not haggling over money and who gets what. There have been NO discussions about dividing assets.

It's unclear why neither of them has gotten off the dime to end their marriage -- but they haven't.

Ashton and Demi separated in November, 2011. They were together as a married couple for 6 years.

Sara Leal -- the 22-year-old blonde who allegedly slept with Ashton Kutcher this summer -- insists she isn't responsible for the actor's crumbling marriage to Demi Moore ... telling TMZ, she was just a "bump in the road."

Less than two weeks before Demi Moore announced she would divorce Ashton Kutcher, he threw a Hail Mary to save the marriage ... in the form of a lavish, eco-friendly gift.

According to our sources, Ashton contacted a high-end car company, to buy a new set of wheels for Demi's birthday. We're told Ashton picked out a 2012 Lexus LS 600h L -- and paid North of $100,000.

Our sources say Ashton wanted a quick deal -- bagging the luxury hybrid on November 9, just two days before Demi's birthday.

If it was meant to win back Demi ... clearly it didn't work. We don't know if Demi accepted the vehicle or if Ashton was able to give it back to the car company.

Demi Moore will divorce Ashton Kutcher, her husband of 6 years ... and she's strongly suggesting it's because of the cheating scandal.

Demi says, "as a woman, a mother and a wife, there are certain values and vows that I hold sacred, and it is in this spirit that I have chosen to move forward with my life."

Ashton just tweeted, "I will forever cherish the time I spent with Demi. Marriage is one of the most difficult things in the world and unfortunately sometimes they fail" -- though it's unclear if this message was approved by his Twitter team.

Demi and Ashton made headlines in September after a 22-year-old woman named Sara Leal claimed she had unprotected sex with him in San Diego.

Leal claimed Ashton told her he was "separated" from Demi at the time of the alleged affair.

With no Ashton in sight, Demi Moore hit up Sarah Silverman's comedy show in L.A. Thursday night with some friends -- and she even brought her wedding ring along for the ride.

Demi Moore looked to be in desperate need of a good meal when she hit the N.Y. premiere of her new movie last night ... and according to Joan Rivers, it's because Demi BARELY ate anything on her flight in from L.A.

Joan was on the same flight as Demi ... and after she got off the plane, Rivers sold out her co-passenger to the paparazzi ... telling them that all Demi ate on the 6-hour flight was an apple ... and some water.

By the time Demi hit the red carpet ... it was Moore who was feeding the media, by sporting her wedding ring ... despite rumors that her marriage to Ashton Kutcher is on the rocks.

The moving truck that supposedly took stuff from Ashton Kutcher's house yesterday didn't go there at all -- TMZ has confirmed.

The photo agency that distributed the picture claimed the van went to Ashton and Demi's place, but the couple's rep tells TMZ, the van wasn't at their house ... in fact, it wasn't even on their street.

A moving truck went to Ashton Kutcher and Demi Moore's house in L.A. yesterday ... according to the photo agency that shot this pic.

Ashton Kutcher and Demi Moore spent some quality time TOGETHER in Santa Barbara this weekend ... during a quick camping trip in Santa Barbara with a few of their close friends.

Amidst a tornado of divorce rumors, the couple tried to escape to Cachuma Lake on Sunday ... joined by their Kabbalah instructor Yehuda Berg and Ashton's friend Eric Buterbaugh.

During the trip the gang was seen chatting beside the campfire. The very next day, the all got in their cars and went their separate ways.

Monday, Ashton fired off a few tweets about his wife, saying, "Big night for TV #twoandahalfmen Bears vs Lions and @mrskutcher's 5. My tivo might explode."

He later congratulated Demi on her TV movie, writing, "@mrskutcher good luck tonight! you should be proud."

Just two days before the camping trip, the couple was reportedly spotted together at Kabalah center in L.A. to celebrate Yom Kippur -- the Jewish day of atonement.