Kourtney Kardashian and Scott Disick 'Have Never Been Better,' Source Says

Is the drama between Kourtney Kardashian and Scott Disick finally over?
A source tells PEOPLE that the exes — who dated on and off for nine years before they split in 2015 and share three children together — are nothing but friendly.
“Kourtney and Scott have never been better!” the source says. “They’re both in happy relationships. They get on so well and co-parent so successfully.”
Kardashian turned 39 on Wednesday, a milestone she celebrated with a rom