The former couple, insiders tell the NY Post, have been more civil with one another as of late, and will spent Christmas together with the children, Leni, Henry, Johan and Lou.
“They’re trying to be co-parents and show up for their children,” one source told the paper, while another said the exes have been "trying to work it out, mainly for the kids."
The Kiss from a Rose singer “has been doing everything to get Heidi back," the source said, adding "they have been talking on the phone regularly.” (A Klum rep told the paper “rumors of them getting back together are 100 percent not true.”
The Crazy singer and Project Runway host had bad blood earlier this year after Heidi hooked up with her bodyguard Martin Kirsten, with Seal saying she was classless to "fornicate with the help" after the break-up of their six-year marriage.
The one-time couple, famous for their lavish Hollywood Halloween parties, announced they were parting in January.