03/22/2015 01:14 pm ET Updated Mar 22, 2015

Kourtney Kardashian Opens Up About Scott Disick's Rehab Stay

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Kourtney Kardashian discussed her longtime boyfriend Scott Disick's current rehab stay while she was hosting an event at a Las Vegas club on Saturday.

After telling People that Disick is "doing well" in treatment, Kardashian added that his commitment to wellness is strengthening their relationship.

"He is learning so much about himself and growing, and so that's really amazing to see," the 35-year-old told People. "When he's working on himself it only betters our relationship."

Disick, who has three children with Kardashian, entered a treatment facility for substance abuse in Costa Rica on March 16.

"I realize my issues are bigger than me and I'm ready to truly remedy this struggle I continue to battle," he said in a press release.

Kardashian was joined in Las Vegas by a group of girlfriends:

And, we're off...girls trip! Vegas! Meet me @marqueelv #Marqueedayclub Today! Enroute! - Thanks @wheelsup8760 ✈️

A photo posted by Kourtney Kardashian (@kourtneykardash) on

It's about that time. #vegasbaby ✌️

A photo posted by Kourtney Kardashian (@kourtneykardash) on

#brunettesonfleek #youcantsitwithus #vegasbaby

A photo posted by Kourtney Kardashian (@kourtneykardash) on



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