Joe Jonas and Sophie Turner Have ‘Been Living Separate Lives for Months,’ Source Says

The musician filed for divorce from the actress after four years of marriage on Tuesday

Joe Jonas filing for divorce from Sophie Turner on Tuesday did not come as a “surprise” to the people around them, as they spent “the whole summer apart,” according to a source who knows the couple.

“They were not separated but they’ve been living separate lives for months,” the source said.

The filing comes days after PEOPLE reported Jonas, 34, had retained a divorce lawyer despite continuing to wear his wedding band. According to the source, Jonas and Turner, 27, “haven’t gotten along in a while, but they’re hoping to resolve this all amicably.”

“As far as custody goes, this literally all just happened, so they’re figuring it out in real time,” the source says. “They did have a prenup. As a family, they were based in Florida. The kids were with him the last few months, traveling with him with family while he’s been on tour. Sophie’s been working in the UK.”

Jonas claims in his divorce papers that the couple’s two daughters have been living with him as of late.

Reps for Jonas and Turner have not responded to multiple requests for comment.

Documents obtained by PEOPLE confirm that the musician filed for a dissolution of marriage with the Game of Thrones actress after four years of marriage. They share a daughter named Willa, 3, and a second daughter identified in the divorce documents as D., 14 months. The filing claims “the marriage between the parties is irretrievably broken” and states that they have a prenup.