Why so smiley, Kourtney Kardashian?

The 36-year-old has been through a lot since July, when she split from her ex-boyfriend and baby daddy, Scott Disick.

But the question on everyone’s mind is still what went down with 21-year-old pop star Justin Bieber — and she finally dished!

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kourtney kardashian con justin bieber

Kourtney Kardashian and Justin Bieber.

"We're friends," Kourtney said during an upcoming appearance on The Ellen DeGeneres Show.

Host Ellen DeGeneres, 57, teased, "You're smiling as if that maybe it's beyond friends."

"I've been smiling this whole time since I've been sitting here," Kourtney replied.

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kourtney kardashian and justin bieber

The pair was rumored to be hooking up after they were spotted at an LA night club last month — and later that night, Kourt was seen leaving the Montage Beverly Hills hotel (one of Justin’s favorite places to stay) at 4 a.m. He previously said he felt used by the reality star, and she allegedly regrets the rendezvous.

“She feels like she’s being punished and it just goes to prove her initial instinct — that Justin is too young and too immature for her. She’s kind of beating herself up for ever getting involved with him in the first place, and not listening to her gut. She really regrets the whole thing,” an insider revealed.

Watch Kourtney on The Ellen DeGeneres Show on Monday and check out the preview below: