Umm their relationship IS totally weird!

In last night's drama-filled episode of Keeping Up With the Kardashians, Kim Kardashian and Khloe Kardashian confront their oldest sister Kourtney about her "weird" relationship with their mother's much younger boyfriend, Corey Gamble.

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

Kim seemed to take issue with an Instagram snap of the 37-year-old mom of three, hiking with two of her children and and Corey.

While discussing the sitch with Khloe, Kim says of the snap, "That looked like a family photo! That was so inappropriate. I was, like, uncomfortable. Like, out of this world."

Khloe seemed to agree with Kanye's lady love, saying, "That was the nail in the coffin for me. 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."

We get that Kourtney's baby daddy is wining and dining every gal he can find, which means he's probably not the most proactive father, but we still think it's a little odd that Corey and Kourt would be spending so much time together.

Later in the show, Kim lunches with Kourtney and confronts her about their relationship -- but Kourtney insists there's nothing wrong with him. "He's fun, you just need to get to know him better. Just ask him questions ... but you don't need to be nosey," says Scott Disick's ex.

Ever the peacemaker, Kim decides to make more of an effort with Corey, and has a sit down with her to get to know him better. During their chat, Kimbo finds out about Corey's family (or lack thereof) and why he loves hanging out with the Kardashians so much.

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

SEE, EVERYTHING IS PERFECT.

Hiking.

A photo posted by Kourtney Kardashian (@kourtneykardash) on