The 38-year-old reality star has son Mason, eight, daughter Penelope, five, and son Reign, three, with her former beau - whom she split with in 2015 after nine years of on/off dating - and has said that whilst Scott still visits her home in order to see his brood, new boundaries must be put in place now that she's moved on with hunky model Younes.
Speaking to Scott - who is now romancing 19-year-old Sofia Richie - during a preview clip for Sunday's (04.03.18) season finale of 'Keeping Up with the Kardashians', Kourtney said: ''I just felt like we should discuss some of the boundaries in the house. I feel like sometimes because this was your house, sometimes I feel like you walk in like it still is.''
Kourtney - who has been dating 24-year-old Younes since 2016 - cited one particular incident when Scott wandered into her bedroom to look for sunglasses, and said the room should now be a private space.
She added: ''I feel like it has to make sense for my relationship too and just like if you just wander into my bedroom and go, 'Hey, can I see all your sunglasses?'''
Scott respected her boundary request, responding: ''I wasn't looking through your panties. I understand the boundary of not going into your bedroom because that's a private place for you.
''Okay, there's obviously some boundaries that we both need to respect and I don't want you to be uncomfortable. I get it. All things that are
understandable in this co-parenting life.''
And the 34-year-old star even had a boundary of his own to suggest.
He said: ''I was also thinking I have a boundary. I don't really wanna hug anymore. I think we should just shake hands when we see each other. Is that cool?''
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