Disick is invited to Kris Jenner's Christmas Eve bash but seems uncertain if he will attend, a source tells PEOPLE

By Aili Nahas Aurelie Corinthios
December 21, 2015 08:00 PM

Scott Disick and Kourtney Kardashian have had their fair share of ups and downs since ending their nine-year relationship in June, but perhaps the drama will be put aside to celebrate the holidays.

As of now, Disick, 32, is invited to Kris Jenner‘s annual Christmas Eve party Thursday, though it’s still uncertain if he will attend, a source tells PEOPLE.

The source added that Disick plans to see his three children, Mason, 6, Penelope, and Reign, 1, on Christmas Day.

Meanwhile, the Christmas Eve bash, which always takes place at Jenner’s house, will be a more intimate gathering this year.

“It’s been a tradition as long as I can remember,” Kim Kardashian West wrote on her website and app last week. “[This year] we have definitely downsized the party because I think the older we get, and with all of us being so busy, it’s more important to spend the holidays with our immediate family and really close friends.”

According to Kim, 35, the family then migrates over to Kourtney’s house on Christmas Day and spends the morning in their pajamas opening presents, something she called “such a fun tradition” – and one Disick is apparently planning to be a part of this year.

The news that Disick will be joining the family for the holiday celebrations comes during a difficult time for the exes, since Kourtney has recently been involved in an unexpected romance with Justin Bieber, 21.

RELATED: Kourtney Kardashian Is Hooking Up with Justin Bieber, But ‘It’s Not Serious,’ Source Says

A source told PEOPLE last week Kourtney and Bieber are indeed "hooking up" and have been for several months, though the relationship isn’t serious.

While another source told PEOPLE the fling is a "huge ego boost" for Bieber, Disick is apparently struggling with the news.

“Of course it stings a bit that Kourt is hooking up with Bieber. But Scott also knows his place and that he doesn’t have the right to have a fit about it,” another source told PEOPLE. “He is convinced Kourt is doing it to hurt him. And she succeeded.”

Though Disick is expected to join the family at some point on Christmas, he’ll likely ring in the New Year without the Kardashian-Jenner clan, as he plans to host a bash at Las Vegas’ 1 Oak nightclub.