Kourtney Kardashian's Boyfriend Scott Disick Parties While She is Pregnant

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While his girlfriend Kourtney Kardashian sits at home eight months pregnant, Scott Disick is partying up a storm in Las Vegas.

An insider tells Star about Scott's trip to the city last month:

"He was in the best spirits, joking with friends like Joe Francis and Scott Sartiano. They had dinner at Stack and then headed out to 1 Oak, where they partied at a VIP table until 3 a.m."

And Scott didn't seem to be missing his girlfriend, who could give birth at any time. "He wasn't really on his phone texting her or anything at the club or dinner," source says. "There was no clear indication that he missed Kourtney. He was doing shots and drinking beers at the club, watching his friends hit on girls. He was just having a blast."

Perhaps out of concern for the well-being of his pregnant girlfriend, Scott moved the party closer to home a few days later. What a gentleman:

"Scott was at Chateau Marmont [in West Hollywood] with two girls and three guys. Scott sat between the women and was flirting up a storm with them, telling them what a good guy he is. Meanwhile, he was boozing, getting close and basically cheating on his pregnant girlfriend! It was absolutely grotesque and humiliating for Kourtney."