The two exes, who managed to stay good friends after ending their 9-year relationship last year, have rekindled their romance, reported E! online.
"They are back together and giving their relationship a try again. Scott has mellowed out a lot and hasn't been partying," one source said.
Another source adds that "both want to make it work for them and their kids."
The news comes just a few weeks after the pair was spotted getting cozy while vacationing in Mexico with their family. Earlier this year, Scott also joined Kourtney and her famous family during a trip to Vail.
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