The 30-year-old reality TV star - who shares two children, Mason, three, and Penelope, nine months, with his girlfriend of more than six years - has revealed he no longer wants to tie the knot despite previously planning to propose to the 33-year-old beauty on their show 'Keeping Up With The Kardashians' and purchasing a diamond ring.
He told Ryan Seacrest in a one-hour E! News Presentation special, airing on Sunday (21.04.13): ''I think if it's not broke, don't fix it. You know what I mean?
''I feel like I used to want to get married more than she did. And then being that she was always so not interested, I've decided not to be.''
It was previously reported that Kourtney wants her sister Kim's boyfriend Kanye West to design her wedding dress should she and Scott ever decide to wed.
She said: ''I'm going to let Kanye design my wedding dress. Just not right now!''
Kourtney recently offered to be a gestational carrier for her sister Khloe, 28, who has been struggling to get pregnant with her husband Lamar Odom for three years.
The 'X Factor' USA co-host has been very open about her struggles to conceive a child with Lamar, who has two other children from previous relationship.
She was previously forced to deny allegations that she was very upset when her sister Kim announced she is pregnant with Kanye and will give birth in July.