Kourtney Kardashian’s Ex, Scott Disick, Misses Mason and Reign’s Birthday Celebrations

It looks like Scott Disick may be getting the bad parent award in 2015. MStars News has learned that the father-of-three missed his sons, Mason Dash and Reign Aston's special day just like he did when it was his daughter, Penelope Scotland's birthday over the summer.

According to Hollywood Life, Disick was partying once again in Las Vegas instead of celebrating his sons' birthdays. The site predicts that Lord Disick was probably upset with his baby mama, Kourtney Kardashian after rumors started surfacing that she was dating Justin Bieber.

After Kardashian and the singer were spotted hanging out in Hollywood, the photo below made everyone go wild when they believed it was the mother-of-three cuddling with Bieber.

Sources previously slammed dating rumors and claimed that Bieber and the 36-year-old were just friends. "Absolutely nothing romantic is going on between Justin and Kourtney," the insider said. "He looks at her like a big sis, nothing else. They just met for dinner to catch up before heading to the same event, and simply shared a car to the same place." Another source explained, "The Kardashians are super close with Justin. There is nothing romantic happening."

Hopefully that wasn't the reason Disick missed out on his sons birthday. Both boys were born on Dec. 14. Mason turned six, and his brother turned one. Disick didn't even post a Happy Birthday message on social media for his boys.

Their mother previously admitted that she tried her best not to give birth to her youngest son on the same day as his older brother's. "It is still crazy to me that I have two boys born on the same exact day.," Kardashian previously wrote in a new blog. "I really tried to not have it happen, so they could each have their day, but there was no way around it. It is truly so special and meant to be. Happy birthday to the coolest and sweetest boys I know!!!"

As for the Disick children, it appears that they probably won't be spending New Years Eve with their father. Daddy Disick revealed that he was hosting a party in Las Vegas at 1Oak.