The Keeping Up With The Kardashians star posted to Twitter: "Insanity: doing the same thing over and over again and expecting different results. Albert Einstein."
Immediately, fans began to wonder if it was a cryptic reference to Scott...
Insanity: doing the same thing over and over again and expecting different results. Albert Einstein— Kourtney Kardashian (@kourtneykardash) August 24, 2015
Kourtney and Scott were together for nine years before Kourtney ended their relationship over the summer, after photos of Scott partying with another woman in Monte Carlo were reportedly the last straw.
The couple - who are now living apart - have three children together: Mason, five, Penelope, three, and eight-month-old Reign.
After the cryptic tweet was posted overnight, fans weighed in, with many speculating Kourtney was talking about Scott. Some wondered if it means they'll be getting back together...
@kourtneykardash Yes until it applies to matters of the + 3 kiddos.— Jen Staffeldt Smith (@jenstaffeldt) August 24, 2015
@kourtneykardash sounds like your referring to Scott— Xue Fong Wong (@xuefongwong) August 24, 2015
@kourtneykardash remind you of your old relationship kourts?— pearl McMillan (@pearlm88nzchch) August 24, 2015
@kourtneykardash Is that what you're doing with Scott?— Angie Wilson (@aWilsonow) August 24, 2015
@kourtneykardash so you're saying there's a chance?— ProTrader_Inbox (@protrader_inbox) August 24, 2015
Kourtney's tweet came amid speculation Scott had spent the weekend at her home, fuelling the 'are they getting together again' gossip mill.
It all started when Scott shared a photo to Instagram showing himself enjoying some sunshine by a pool that looked like Kourtney's. However, a source told TMZ that Scott had just been visiting the kids and a reconciliation is not on the cards.