This is totally the most boring A-list celebrity divorce ever.
Scarlett Johansson and Ryan Reynolds, who surprised fans by confirming their separation earlier this week, did not split up amid any scandal.
Rather, they confronted the issues that distance created in their marriage, at first believing the relationship might not be irretrievably broken.
In the end, they amicably agreed it just wasn't happening.
The source says Johansson, in particular, was feeling the strain of drifting part, and that Reynolds tried hard to improve a difficult situation.
"At first it was ... let's fix this," a source says of the couple. "Then it got to the point where it was just, if it's not working, it's not working."
"He's an adult, and he finally just said they should stop."
The age difference – she is 26, he is 34 – may have been a factor: "She's young, and that played into how she's able to deal with things."
As for the obligatory reports that Reynolds was involved with Blake Lively, his Green Lantern co-star, several sources insist it isn't true. "They worked together and got along really well," says a source. "But there's not more to it."
Reynolds reportedly plans to let Johansson file for divorce first. Following the dissolution of their two-year marriage, healing will take time.
"Ultimately, this is the best thing to keep both of them happy, healthy in the long run," the source says. "But yeah, he's sad. They both are."