One insider tells us, "They are back together and giving their relationship a try again."So what's the cause of the rekindling?
The source notes, "Scott's mellowed out a lot and hasn't been partying."Another source adds that the parents to Mason, Penelope and Reign "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.
So in this story, he never cheated on Kourtney with Kristin.

31 show was Scott Disick, the father of Kourtney Kardashian's son, Mason!
"While Kourtney and Scott were on a break, Scott hooked up with Kristin," a friend reveals to , "Scott and Kourtney argued about Kristin," a friend confirms.
And THAT's supposed to explain Scott's They all used to be BFFs.
While Kourtney and Scott were on a break, Scott hooked up with Kristin. Okay, let's not forget that while Kristin HAS banged one of the K-klan, it was actually one of the Jenners… Now we were able to dig up this picture of them back in 2008 (a year before said dabblings, above), but were they ever really "bffs?
it’s really disrespectful to me and I’m in a committed relationship.
, the whole Kardashian clan came out each week to show its support. Now insiders tell contestant until being eliminated in early October and newly single at the time, just before Kourtney became pregnant with her and Scott's child.
They've spent plenty of time together, mostly with their kids, in the year and a half after their breakup.
He joined the family on a trip to Vail earlier this year alongside Kris Jenner, Kim Kardashian, Khloe Kardashianand other family members.
“It’s 100 percent not true,” Cavallari tells “Access Hollywood.” “I just think, what convenient timing for them with their show premiering next week and with everything that’s going on for Kim, I feel like they’re trying to take the heat off her.” The rumors began with this week’s Life & Style cover, which features a photo of Kourtney, as well as one of Disick with his arm around Cavallari, alongside the headline, “Betrayed!
Scott’s Affair with Kristin.” The magazine alleges that Disick had a fling with Cavallari in 2009, shortly before Kardashian got pregnant with son Mason.
But we can't forget Cavallari's hot date for tomorrow night!