Los Angeles, CA- Diane Lane and Josh Brolin seemed like one of those Hollywood couples destined to survive. But that isn’t the case so after eight years the couple is calling it quits, and new reports show Lane signed the divorce petition on Valentine’s Day.

Lane and Brolin were introduced by Brolin’s stepmother Barbara Streisand eleven years ago, according to People magazine. After dating for three years, they finally tied the knot in 2004 at his California ranch.

In the court documents obtained by none other than TMZ, Lane cited irreconcilable differences. And an insider who spoke to People backed that up, “They’ve been separated for several months. This was a hard decision for both. They were together for eleven years, the relationship just ran its course.”

After the news broke, gossip sites lit up, speculating that the divorce may have been the result of Brolin’s drinking. The divorce filing came just two months after Brolin was arrested for public intoxication just before midnight on New Year’s Eve.

A recent study from Norway showed that disparities in a couple’s drinking habits can affect their divorce rate. That study found couples who drink together in roughly the same amounts and frequency are more likely to stay together. When one spouse drinks more than the other the marriage has a better chance of ending in divorce.

But since the couple is handling their split in a dignified way, it may be unlikely that they will play the blame game. The divorce documents also failed to mention if the couple had a prenuptial agreement.

This was the second marriage for both and they have no children together.

Nothing deals a blow to Valentine’s Day like a divorce filing, but it’s not as uncommon as one might think. Last year, a website that helps connect users with divorce attorneys and divorce advice found that filings shot up 40 percent on Valentine’s Day.

“Over the past two years we’ve seen an average increase of 40 percent in the number of requests for divorce lawyers around Valentine’s Day, compared to the previous six months,” said Mark Britton, founder and CEO of Avvo told the New York Post in 2011.

Britton added, “Furthermore, the number of questions about divorce has soared 36 percent during that same time. Indeed, there’s definitely a major Valentine’s spike when it comes to divorce.”

So why do divorce filings and information request shoot up after the lover’s holiday? There could be two reasons either people are finally acting on their New Year’s Resolutions, or they are waiting to see how their spouses act on Valentine’s Day.

One spouse may also delay divorce filings until February because they are waiting to see what their other spouse’s pay and bonuses will be in the following year. That may seem cynical, but money matters and finances play a big role in whether a marriage will fail or survive.