Taking him back? Kourtney Kardashian mulls over the idea of reconciling with Scott Disick in the upcoming episode of Keeping Up With the Kardashians, which airs Sunday, August 28.

In a sneak peek, Kardashian, 37, talks with mom Kris Jenner and sister Khloé Kardashian about possibly attending Disick's 33rd birthday party.

"Scott invited me to his birthday party in Las Vegas and I'm just not sure if I want to go," Kourtney says in a confessional. "I'm so happy that Scott and I are getting along so well and that we're coparenting, but I think hanging out with Scott without the kids — Scott can just take any little thing and run with it and think that we are getting back together tomorrow."

"Right now, I can't even wrap my head around that idea," she adds. "There's so much work that would be involved. I'm so not even there yet."

The pair ended their nine-year relationship in summer 2015 after photos surfaced of Disick hanging out with his ex Chloe Bartoli in France. Despite the heartbreak, Kardashian and Disick have remained amicable and continue to raise their three children — Mason, 6, Penelope, 4, and Reign, 20 months — together.

Last month, the family of five vacationed in Nantucket, Massachusetts. “[We ate], slept, relaxed, swam, drove around, saw the sights," Disick exclusively told Us Weekly while making an appearance at 1 OAK nightclub in Las Vegas on July 29. "[We] checked out different restaurants. Went to some candy stores for the kids. Overall, it was very, very relaxing."

KUWTK airs Sundays on E! at 9 p.m. ET.

Watch the preview in the video above!

Can't get enough of Us? Sign up now for the Us Weekly newsletter packed with the latest celeb news, hot pics and more!