Kourtney Kardashian and Scott Disick could soon be back together.

Over a year after the Keeping Up With the Kardashians star called it quits with Disick due to photos of the father of three with his ex-girlfriend, Chloe Bartoli, in the South of France, a source claims Disick, 33, is wooing the 37-year-old Kardashian.

Disick "is on a mission to win Kourtney back for good," a friend of Disick revealed in the new issue of Us Weekly.

According to the report, Disick has been living with Kardashian and their three children, Mason, 6, Penelope, 4, and 23-month-old Reign, at the $8.5 million home in Calabasas, California, they shared prior to their split.

In recent months, claimed the report, Disick “has really cleaned up his act... and Kourtney is very encouraged to see how much he has been trying.”

“He’s in better health and better spirits,” said a source. "He has majorly cut back on his drinking.”

Although Disick previously made money from club appearances, $100,000 per night at times, he has cut back at Kardashian's request and is now making money by flipping houses -- with the help of his former girlfriend Kardashian “because she has a great design eye.”

To see more of Kourtney Kardashian and Scott Disick, tune into Keeping Up With the Kardashians Season 12 on Sunday nights at 9 p.m. on the E! Network and check out a sneak peek at this week's new episode below.

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Kourtney kardashian, Scott disick, Keeping Up With The Kardashians, E!, Reality TV