Former child star Danica McKellar, who filed for divorce from her composer husband of three years, Mike Verta, earlier this week has likened the sadness of the couple's split to that of a "death in the family."

The star, who played girl-next-door Winnie Cooper on hit TV series The Wonder Years, cited "irreconcilable differences" as the cause of her broken marriage.

"I am just overwhelmed by the love and support in the messages I've been receiving from all of you via Twitter and Facebook during this incredibly tough time," she says via her blog. "The end of a marriage has got to be one of the saddest events one can experience - I've heard that the pain is second only to an actual death in the family, and that sounds about right...

"However, I am so grateful that my relationship with my ex, Mike Verta, has been nothing but amicable, and that this process seems like it will be as smooth as can be hoped for. We are both totally in love with our little boy and believe this is the best thing for him."

McKellar is reportedly asking for joint custody of the couple's son, Draco, according to "[w]e are committed to raising our son together and we are focused on remaining the best parents we can be," she tells the site.