Kim and Khloe Kardashian call out Kourtney's 'inappropriate' relationship with Corey Gamble: 'They are always together'

Kris Jenner Says Corey Gamble Is a 'Great Guy', Kids 'Like Him a Lot'

Relationships can be tricky ... especially when it comes to the Kardashians.

On Sunday's episode of Keeping Up With the Kardashians, Kim and Khloe Kardashian awkwardly call out their older sister, Kourtney, for being a little too close to their mother Kris Jenner's boyfriend, Corey Gamble.

"Him and Kourtney, they go out at night together, they hang out during the day, they go on hikes," Kim, 35, tells the cameras. "They are always together. I think I need to talk to Kourtney just to call her out on it."

WATCH: Kim Kardashian Talks Catching Her Mom Having Sex With a Guy

Kim was particularly bothered by a photo of Kourtney, 37, and Corey, 35, hiking with two of Kourtney's children with her ex, Scott Disick -- 6-year-old Mason and 3-year-old Penelope.

View this post on Instagram


A post shared by Kourtney Kardashian (@kourtneykardash) on

"That looked like a family photo!" Kim says, calling the two's relationship "weird." "That was so inappropriate. I was, like, uncomfortable. Like, out of this world."

For her part, Khloe wholeheartedly agreed.

"That was the nail in the coffin for me," the 31-year-old reality star expressed about the photo. "I love Corey, I think he's super nice, but I don't ask him to hang out. Kourtney and Corey are, like, conjoined twins."

RELATED: Kourtney Kardashian's sexiest Instagrams

Kourtney Kardashian's sexiest Instagrams of 2016
See Gallery
Kim and Khloe Kardashian call out Kourtney's 'inappropriate' relationship with Corey Gamble: 'They are always together'
My @cosmopolitan cover on newsstands now!
@cosmopolitan 💙
Yacht club.
Yacht life.
I love this 📸 from October issue of @cosmopolitan shot by @yutsai88 💕
Behind the scenes from my Cosmo cover shoot...on my app!
#ad Love that @fittea is all-natural, gluten free and dairy free, and promotes fat burning. ☕
Just call me the dog whisperer.
Five things I do to get bikini ready in a week. On my app. #LinkInBio
My two favorite swimsuit trends right now, on my app. #LinkInBio
Sundaze 🍒
Short girl problems.
On a Saturday. 🇺🇸
On a sand hill.
Happy birthday to my fly as hell boo! I am so happy I got to celebrate with you today and for the past two weeks lol. I love you so much!
On an adventure.
My Miami sis.
HAPPY fourth! ❤️🇺🇸💙
⭐️🐠 #healthebay #smpieraquarium
#TBT Pregnant mermaid. On my app. #LinkInBio 🐚✨
Styling diaries. On my app. #LinkInBio
Missing Miami. The best ONE-PIECE swimsuits for summer on my app. #LinkInBio
Mirror mirror...
Sooooo excited to announce that I'm the NEW ambassador for Manuka Doctor skincare! Check out my video on @ManukaDr #BeeingKourtney #SkincareFromTheHive 🐝🍯
Selfie camera view.
He kills me.
CASUAL COOL: on my app. #LinkInBio
Sunday funday!
New 📸s on my app. #LinkInBio
TBT: denim on denim on denim. On my app. #LinkInBio
📸 on my app. #LinkInBio
More 📸 with @brendanforbes on my app, link in bio.
TBT: 📸 Annie Leibovitz. On my app, link in bio.
LA nights ✨ Shop the look: slip dresses. On my app, link in bio.
I missed you Mario.
Currently coveting: mom jeans. On my app, link in bio.
Sometimes good morning means goodnight.
I needed this.
Don has been gone for 10 days but he is back! He almost made me throw those kind of workouts.
Shop the Look: NYC street chic. On my app, link in bio.
Tell everybody I'm back in town

However, Kim later changed her tune after Kourtney suggested that she need to get to know their mother's boyfriend of more than a year and a half "better." Corey eventually shared that he was never close to his own family growing up except for his father, which is why he enjoys the Kardashian family dynamic so much.

"I hear about Corey's life and it makes me feel very lucky to have such a big family," Kim said. "[The conversation] made it all come together and makes sense to me why he loves spending time with Kourtney and the kids."

Corey and Kris have been dating since November 2014. Of course, perhaps it shouldn't be too surprising that he's close to the Kardashian sisters, given that he's closer to age to them than Kris, who turned 60 last November.

WATCH: Khloe Kardashian Refuses to Help Brother Move Into His New House on 'KUWTK'

Last October, Khloe and her BFF, Malika Haqq, uncomfortably grilled Corey on his intentions with Kris over dinner during an episode of Keeping Up With the Kardashians. However, Corey -- who admitted he'd always been attracted to older women -- handled the sensitive questions about wanting to get married and if he wanted any kids of his own like a total pro.

Watch below:

Khloe Kardashian Grills Corey Gamble on Whether He'll Marry Kris Jenner

Read Full Story