Kevin Federline is standing by his former woman.
The would-be rapper paid a visit to his estranged wife in rehab on Saturday with the couple's two sons, 17-month-old Sean Preston and 5-month-old Jayden James in tow, People reports. (According to Us Weekly, it was Spears' mom, Lynne, who brought the kids.)
It was Federline's second visit to Promises since Spears reentered the treatment facility last Wednesday.
He previously visited Spears on Friday, bringing her cigarettes and photographs of their children, a source told E! News.
Spears checked into the Malibu facility for a second time last Wednesday, after checking in and back out earlier in the week.
In addition to her two admissions to Promises, Spears also briefly checked into Eric Clapton's Crossroads Center in Antigua earlier in the month.
However, the facility apparently didn't meet with Spears' approval, as the 25-year-old singer left less than 24 hours later and returned to L.A., where she treated herself to two new tattoos and the buzz cut heard 'round the world.
Shortly thereafter, Spears entered Promises for her first stint, which ended abruptly last Tuesday, after she blamed the center's staff for allowing paparazzi to photograph her on the grounds of the facility.
Both Federline and Spears' family were reportedly instrumental in convincing the troubled entertainer that returning to rehab was in her best interests.
Spears' father, Jamie, told Fox News last week that his daughter was "a very sick little girl" and that the family was "just trying to take care of her."
Meanwhile, after Spears checked out of Promises for the first time, Federline requested an emergency hearing in their custody dispute but made it clear he would drop the legal action if she returned to the facility.
Once Spears agreed to go back to Promises, Federline put off the hearing indefinitely, with the caveat that he would resume legal proceedings if she exited treatment prematurely again.
The ex-couple has reportedly agreed that Federline will care for their sons for the 30 to 45 days Spears is expected to remain in rehab.
Aside from visits from Federline and family members, Spears reportedly had a rehab run-in with Daniel Baldwin last week, Us Weekly reports.
The actor, who recently logged time in treatment himself after a pair of arrests, told the magazine Spears was "doing great" and that he gave her his phone number just in case she felt like keeping in touch.
"I told her if she needed anything or if she wanted me to bring anything to her where she's at, I’d be happy to come see her," Baldwin said Sunday at a pre-Oscar party.