Scott Disick reportedly back to his old ways.

Apparently Lord Disick‘s habits of excessive drinking and partying are catching up with him once again. The Keeping Up With the Kardashians star is reportedly having problems on the home front with his longtime girlfriend, Kourtney Kardashian.

According to Radar Online, Kourtney, who is currently pregnant with the couple’s third child, has given the 31-year-old reality TV star an ultimatum. She’s reportedly decided to separate from him until he can gain control of his life and turn things around.

The publication also reported that the National Enquirer revealed alleged details about Father’s Day, where Disick was reportedly a no-show. The following weekend on Saturday, June 21, Disick had a birthday bash in the Hamptons where he celebrated his big day, which was actually May 26.

An insider close to the famous family spoke with the Enquirer about “The Lord’s” out-of-control behavior. Kourtney’s demanding that he prioritize his life and put his family first.

“Kourtney has been a physical and emotional wreck, and she’s at her wit’s end,” an insider told the Enquirer. “Hours before they were supposed to enjoy a Father’s Day brunch, Kourtney ordered him to leave and not come back until he was ready to commit fully to their family.”

After the couple got into a heated argument in the Hamptons, Disick reportedly fled their rental home, leaving Kourtney in tears. She tried to call him, but to no avail. “But he didn’t pick up his phone. Now Kourtney’s saying she’ll raise her kids alone unless Scott shapes up immediately,” the insider said.

Another inside source also shared Kourtney’s plans if he doesn’t opt to fix the issues he’s currently facing. “Kourtney is prepared to give Scott his permanent walking papers unless he curtails his boozing and flirting with other women. He needs to step up to the plate, or hit the road for good.”

Image via Scott Disick, Twitter