Jennifer Aniston urged Keaton to contact Cox

Jennifer Aniston urged Keaton to contact Cox. Michael called her after that.

Source said, "Once Courteney got over the shock, it was like they’d never been apart.
Courteney has regretted walking out on Michael years ago, and she’s grateful
he’s giving her a second chance. Now Jen’s thrilled they’re making another go
of it. She’d love to see Courteney married and settled again!"

Source