Talk about leaking a story late on Friday for the least coverage. TMZ is reporting that Heidi Klum, 38, is about to file divorce from Seal, 48, after nearly seven years of marriage and four children together. (Three of whom are Seal’s, he adopted Heidi’s daughter from a previous relationship.) I’ve sometimes thought that Heidi and Seal aren’t as solid as they’ve seemed, as I get suspicious when couples seem to constantly tout how great their relationship is. Still, this is surprising and sad news. These two really did seem like they would be together until very late in life. Here’s TMZ’s report:

Heidi Klum will file for divorce from Seal … TMZ has learned.

Sources with direct knowledge tell TMZ … Heidi will file divorce papers in L.A. County Superior Court as early as next week. We’re told Heidi will cite “irreconcilable differences” as the cause for the divorce.

The couple married May 10, 2005. They have 3 biological kids. Seal adopted Heidi’s eldest girl from a prior relationship.

The couple is famous for renewing their vows every year on their anniversary … in a lavish ceremony.

As for splitting up the goodies, there’s a lot on the line. According to Forbes, in the last year alone, Klum raked in $20 million. It’s unclear how much Seal made.

Heidi attended last Sunday’s Golden Globes without Seal. The last photo she tweeted with him was back on December 26.

[From TMZ]

Radar reports that Seal was last seen with Heidi on January 7, and that he “was spotted alone Friday at L.A.X.” People reached out to their reps and have not heard back yet.

Seal was touring with his band throughout 2011 and will be touring in February and again in December of this year. He has a new album coming out at the end of this month. Was it the distance and the professional commitments that ate away at their relationship, or are we about to hear about one of them finding another partner while the other was away?

Kaiser reminded me that Heidi has been pregnant almost throughout her entire marriage. She met Seal when she was pregnant with her daughter Leni, now 7, and then they had Henry, 6, Johan, 5, and Lou, 2. In November, 2009, Seal adopted Leni, and then Heidi took Seal’s last name, Samuel, in December, 2009. (She still goes by Klum professionally.) Maybe the stress of having young kids got to them like so many other couples. I’ve seen photos of the family out with one nanny per each child, and Heidi has admitted that they have three nannies “two on at a time,” so it’s not like they’re dealing with the same reality as other families. Heidi kind of hinted at issues taking care of all their children. She told US in August that “it’s a huge responsibility to have four kids.” It must have been even harder for her with Seal away on tour. This is very sad news, especially for their children. I’m hoping it’s either not true or that they’ll try to work it out. Maybe they have been trying for some time and have been keeping it under wraps.

Heidi and Seal are shown out in Aspen on 12-27-11. Credit: Fame Pictures. The candids of them out with their kids and photographed separately are from 1-7-12 out in Brentwood. Credit: WENN.com. They’re shown at the Primetime Emmy Awards on 9-18-11, at the Globes on 1-16-11 and in August in Sardinia. Photos of Heidi in the striped dress are from 6-5-11. Credit: Fame.