Scott Disick has hit another rough patch.

Kourtney Kardashian's ex-boyfriend, who seemed to be turning his life around after a lengthy stay in rehab, has fallen off the wagon. The Keeping Up With the Kardashians star was supposed to go to New York Fashion Week but hasn't kept any of his plans.

"Scott is still in New York, and he's a mess again," It was reported that "From the minute he touched down, he's been a trainwreck. All anyone can assume is that he met up with the wrong people—people who don't really care about his well-being—and one drink led to another which led to another."

Scott's newfound friends don't seem to have his best interests at heart, which is the root of the problem according to our insider. "None of these people give a damn if he's healthy or not," the source adds. "They just want to party. Scott's back to spiraling."

The father of three was spotted out in New York City Tuesday night looking a little worse for wear, which is probably a result of his partying ways, another source tells us.

"Scott has been going out every night and drinking again,"  "He has been partying hard." Says an Insider.

The 32-year-old reality TV star has said on the E! show that he was going to get his act together for the sake of his family, but the insider says, "After a few months of being on his best behavior, he cracked."

The source adds, "Scott is so used to Kourtney taking him back every time, but this time has been different. Scott is already falling back into his old partying habits." Unfortunately, "Kourtney is not impressed."

Earlier this week the entire Kardashian-Jenner clan was in New York to support Kanye West's Yeezy Season 3 show at Madison Square Garden, but noticeably absent was Scott. Even though Scott was in town for the show, he skipped the festivities and opted to celebrate at 1Oak with a group of models until the early morning.

An insider told us exclusively at the time that Scott was "slightly high-strung" but didn't appear to be "too drunk." He and his group—which included a few of Tyga's friends—left the club at 3 a.m. and headed to an apartment for what "appeared to be an after-party" that didn't end until at least 7 a.m.