The mother-of-three is reportedly impressed with her ex-boyfriend's attempts to win her back and may give him another chance, just one month after they split.
A source told HollywoodLife.com: ''He's not showing up hungover or dishevelled so he looks better even though he's obviously depressed. Kourtney sees how hard he's trying and she's softening a little. Scott is desperately trying to rebuild some trust with Kourtney but he has a long uphill battle ahead of him.
''She is still very guarded though and doesn't want to get hurt by Scott again.''
Kourtney, 36, is also said to still be physically attracted to Scott, with whom she has son Mason, five, and daughters Penelope, three, and Reign, eight months.
The insider added: ''Kourtney can't help but find Scott attractive. He has always been and will always be his perfect match in the looks department. To her Scott is the hottest guy alive.''
Meanwhile, Scott, 31, is equally enamoured with Kourtney's recent slew of sexy outfits following their split.
The source said: ''Kourtney is really making Scott drool with the way she's dressing since the split. He thinks she looks smoking hot and it's getting to him.
''Scott is saying he wished she had put herself together this well when they were together. By the end of their relationship, she was dressing more and more like a soccer mom and didn't really groom herself like she did when she was younger.''
His new album Underneath It All is out now.